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Groups > linux.debian.kernel > #91045 > unrolled thread
| Started by | Patrick Hibbs <hibbsncc1701@gmail.com> |
|---|---|
| First post | 2026-02-03 22:10 +0100 |
| Last post | 2026-03-17 10:30 +0100 |
| Articles | 2 — 1 participant |
Back to article view | Back to linux.debian.kernel
Bug#1126911: linux-image-6.12.63+deb13-amd64: wacom_serial4 doesn't work. Probe fails with error -1. Patrick Hibbs <hibbsncc1701@gmail.com> - 2026-02-03 22:10 +0100
Bug#1126911: linux-image-6.12.63+deb13-amd64: wacom_serial4 doesn't work. Probe fails with error -1. Patrick Hibbs <hibbsncc1701@gmail.com> - 2026-03-17 10:30 +0100
| From | Patrick Hibbs <hibbsncc1701@gmail.com> |
|---|---|
| Date | 2026-02-03 22:10 +0100 |
| Subject | Bug#1126911: linux-image-6.12.63+deb13-amd64: wacom_serial4 doesn't work. Probe fails with error -1. |
| Message-ID | <MkvON-fvUf-3@gated-at.bofh.it> |
Package: src:linux
Version: 6.12.63-1
Severity: normal
X-Debbugs-Cc: debian-amd64@lists.debian.org, hibbsncc1701@gmail.com
User: debian-amd64@lists.debian.org
Usertags: amd64
Dear Maintainer,
Attempting to use wacom_serial4 with my Digitizer II fails. Upon running
`inputattach --wacom_iv /dev/ttyUSB0` The kernel log outputs:
========
[28183.580724] usb 8-2: reset full-speed USB device number 2 using ohci-pci
[28183.762333] keyspan 8-2:1.0: Keyspan 1 port adapter converter detected
[28183.762737] usb 8-2: Keyspan 1 port adapter converter now attached to
ttyUSB0
[28204.140559] serio: Serial port ttyUSB0
[28204.159732] wacom_serial4 serio2: probe with driver wacom_serial4 failed
with error -1
========
No input devices are made and applications can't see the tablet.
As this device uses 9600 baud, I've also tried using `inputattach --baud 9600
--wacom_iv /dev/ttyUSB0` and got the same result.
Attempting to follow the instructions at: https://wiki.debian.org/WacomArtPadII
does not work. This is because the upstream xf86-input-wacom project removed
support for the serial backend in 2022. See also:
https://github.com/linuxwacom/xf86-input-wacom/issues/197
and
https://github.com/whot/xf86-input-
wacom/commit/4fe24547861fa38548f20e5a0bc1f79b5576d8a0
The tablet and tty device themselves were verified to be working by:
1) Running `inputattach --dump /dev/ttyUSB0` and seeing valid data from the
tablet.
2) Attaching the tablet's tty device to a Windows XP guest VM under VirtualBox,
(VirtualBox's serial passthrough mode), and installing the Windows driver in
the VM.
I've also attempted to use isdv4-serial-debugger, but it simply cannot get a
response from the device, and outputs a timeout error. Looking at it's source
code, I don't see how it's supposed to work, as it's seemingly using invalid
commands to reset the device. According to the wacom_serial4 driver
(linux-6.12.63/drivers/input/tablet/wacom_serial4.c:L119), the reset to command
IV mode string is "\r#", but isdv4-serial-debugger uses "&" for this purpose
(xf86-input-wacom-1.2.3/include/isdv4.h:L28). The device id string in
isdv4-serial-debugger also seems to be wrong:
(linux-6.12.63/drivers/input/tablet/wacom_serial4.c:L116), the query version
string is "~#", but isdv4-serial-debugger uses "*" for this purpose
(xf86-input-wacom-1.2.3/include/isdv4.h:L27). Perhaps this is due to the
removal of serial support from xf86-input-wacom?
It would be nice if there was someway to get this tablet working under Debian
natively again.
-Patrick Hibbs
-- Package-specific info:
** Version:
Linux version 6.12.63+deb13-amd64 (debian-kernel@lists.debian.org) (x86_64-linux-gnu-gcc-14 (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44) #1 SMP PREEMPT_DYNAMIC Debian 6.12.63-1 (2025-12-30)
** Command line:
BOOT_IMAGE=/vmlinuz-6.12.63+deb13-amd64 root=UUID=9b7a4eea-5316-4e76-b03a-4f8729009dad ro quiet
** Tainted: POE (12289)
* proprietary module was loaded
* externally-built ("out-of-tree") module was loaded
* unsigned module was loaded
** Kernel log:
Unable to read kernel log; any relevant messages should be attached
** Model information
sys_vendor: MSI
product_name: MS-7641
product_version: 5.0
chassis_vendor: MSI
chassis_version: 5.0
bios_vendor: American Megatrends Inc.
bios_version: V25.1
board_vendor: MSI
board_name: 760GMA-P34(FX) (MS-7641)
board_version: 5.0
** Configuration for modprobe:
blacklist microcode
blacklist arkfb
blacklist aty128fb
blacklist atyfb
blacklist radeonfb
blacklist cirrusfb
blacklist cyber2000fb
blacklist kyrofb
blacklist matroxfb_base
blacklist mb862xxfb
blacklist neofb
blacklist pm2fb
blacklist pm3fb
blacklist s3fb
blacklist savagefb
blacklist sisfb
blacklist tdfxfb
blacklist tridentfb
blacklist vt8623fb
blacklist nouveau
install nvidia modprobe -i nvidia-current $CMDLINE_OPTS
install nvidia_modeset modprobe nvidia ; modprobe -i nvidia-current-modeset $CMDLINE_OPTS
install nvidia_drm modprobe nvidia-modeset ; modprobe -i nvidia-current-drm $CMDLINE_OPTS
install nvidia_uvm modprobe nvidia ; modprobe -i nvidia-current-uvm $CMDLINE_OPTS
install nvidia_peermem modprobe nvidia ; modprobe -i nvidia-current-peermem $CMDLINE_OPTS
remove nvidia modprobe -r -i nvidia-drm nvidia-modeset nvidia-peermem nvidia-uvm nvidia
remove nvidia_modeset modprobe -r -i nvidia-drm nvidia-modeset
options snd_pcsp index=-2
options cx88_alsa index=-2
options snd_atiixp_modem index=-2
options snd_intel8x0m index=-2
options snd_via82xx_modem index=-2
options bonding max_bonds=0
options dummy numdummies=0
options ifb numifbs=0
** Loaded modules:
wacom_serial4
serport
ntfs3
ses
enclosure
scsi_transport_sas
uas
usb_storage
vhost_net
vhost
vhost_iotlb
tap
uinput
uhid
rfcomm
cmac
algif_hash
algif_skcipher
af_alg
bnep
btusb
btrtl
btintel
btbcm
btmtk
bluetooth
ecdh_generic
tun
joydev
snd_seq_dummy
snd_hrtimer
snd_seq
snd_seq_device
xt_CHECKSUM
xt_MASQUERADE
xt_conntrack
ipt_REJECT
nf_reject_ipv4
xt_tcpudp
nft_compat
nft_chain_nat
nf_nat
nf_conntrack
nf_defrag_ipv6
nf_defrag_ipv4
nf_tables
libcrc32c
bridge
stp
llc
qrtr
rfkill
vboxnetadp(OE)
vboxnetflt(OE)
vboxdrv(OE)
vhba(OE)
binfmt_misc
nvidia_drm(POE)
drm_ttm_helper
ttm
drm_kms_helper
nvidia_modeset(POE)
keyspan
ezusb
video
usbserial
nvidia(POE)
snd_hda_codec_realtek
snd_hda_codec_generic
snd_hda_codec_hdmi
snd_hda_scodec_component
edac_mce_amd
snd_hda_intel
kvm_amd
snd_intel_dspcfg
snd_intel_sdw_acpi
snd_hda_codec
ccp
snd_hda_core
kvm
snd_hwdep
snd_pcm
irqbypass
crct10dif_pclmul
snd_timer
snd
ghash_clmulni_intel
soundcore
sha512_ssse3
sha256_ssse3
sha1_ssse3
sg
aesni_intel
gf128mul
k10temp
fam15h_power
crypto_simd
cryptd
vga16fb
wmi_bmof
vgastate
evdev
acpi_cpufreq
pcspkr
dm_mod
msr
parport_pc
drm
ppdev
lp
parport
efi_pstore
bfq
configfs
nfnetlink
ip_tables
x_tables
autofs4
ext4
crc16
mbcache
jbd2
crc32c_generic
hid_generic
usbhid
hid
sr_mod
sd_mod
cdrom
ahci
ata_generic
xhci_pci_renesas
libahci
pata_atiixp
xhci_pci
ohci_pci
xhci_hcd
libata
ehci_pci
r8169
ehci_hcd
ohci_hcd
realtek
psmouse
mdio_devres
usbcore
scsi_mod
sp5100_tco
crc32_pclmul
libphy
watchdog
crc32c_intel
serio_raw
i2c_piix4
i2c_smbus
scsi_common
usb_common
button
wmi
** PCI devices:
00:00.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] RS780 Host Bridge [1022:9600]
Subsystem: Advanced Micro Devices, Inc. [AMD] RS780 Host Bridge [1022:9600]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
Latency: 0
NUMA node: 0
Capabilities: <access denied>
00:02.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] RS780 PCI to PCI bridge (ext gfx port 0) [1022:9603] (prog-if 00 [Normal decode])
Subsystem: Advanced Micro Devices, Inc. [AMD] Device [1022:9600]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 24
NUMA node: 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: b000-bfff [size=4K] [16-bit]
Memory behind bridge: fd000000-fe9fffff [size=26M] [32-bit]
Prefetchable memory behind bridge: ce000000-dfffffff [size=288M] [32-bit]
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
BridgeCtl: Parity+ SERR+ NoISA- VGA+ VGA16+ MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport
00:05.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] RS780/RS880 PCI to PCI bridge (PCIE port 1) [1022:9605] (prog-if 00 [Normal decode])
Subsystem: Advanced Micro Devices, Inc. [AMD] Device [1022:9600]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 25
NUMA node: 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
I/O behind bridge: c000-cfff [size=4K] [16-bit]
Memory behind bridge: [disabled] [32-bit]
Prefetchable memory behind bridge: fbf00000-fbffffff [size=1M] [32-bit]
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
BridgeCtl: Parity+ SERR+ NoISA+ VGA- VGA16- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport
00:06.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] RS780 PCI to PCI bridge (PCIE port 2) [1022:9606] (prog-if 00 [Normal decode])
Subsystem: Advanced Micro Devices, Inc. [AMD] Device [1022:9600]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 26
NUMA node: 0
Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
I/O behind bridge: [disabled] [32-bit]
Memory behind bridge: fea00000-feafffff [size=1M] [32-bit]
Prefetchable memory behind bridge: [disabled] [64-bit]
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
BridgeCtl: Parity+ SERR+ NoISA+ VGA- VGA16- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport
00:07.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] RS780/RS880 PCI to PCI bridge (PCIE port 3) [1022:9607] (prog-if 00 [Normal decode])
Subsystem: Advanced Micro Devices, Inc. [AMD] Device [1022:9600]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 27
NUMA node: 0
Bus: primary=00, secondary=04, subordinate=04, sec-latency=0
I/O behind bridge: d000-efff [size=8K] [16-bit]
Memory behind bridge: feb00000-febfffff [size=1M] [32-bit]
Prefetchable memory behind bridge: [disabled] [64-bit]
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
BridgeCtl: Parity+ SERR+ NoISA+ VGA- VGA16- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport
00:11.0 SATA controller [0106]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 SATA Controller [AHCI mode] [1002:4391] (prog-if 01 [AHCI 1.0])
Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:7641]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 32, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 22
NUMA node: 0
Region 0: I/O ports at a000 [size=8]
Region 1: I/O ports at 9000 [size=4]
Region 2: I/O ports at 8000 [size=8]
Region 3: I/O ports at 7000 [size=4]
Region 4: I/O ports at 6000 [size=16]
Region 5: Memory at fcfffc00 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ahci
Kernel modules: ahci
00:12.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller [1002:4397] (prog-if 10 [OHCI])
Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:7641]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 32, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 16
NUMA node: 0
Region 0: Memory at fcffe000 (32-bit, non-prefetchable) [size=4K]
Kernel driver in use: ohci-pci
Kernel modules: ohci_pci
00:12.1 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0 USB OHCI1 Controller [1002:4398] (prog-if 10 [OHCI])
Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:7641]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 32, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 16
NUMA node: 0
Region 0: Memory at fcffd000 (32-bit, non-prefetchable) [size=4K]
Kernel driver in use: ohci-pci
Kernel modules: ohci_pci
00:12.2 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller [1002:4396] (prog-if 20 [EHCI])
Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:7641]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 32, Cache Line Size: 64 bytes
Interrupt: pin B routed to IRQ 17
NUMA node: 0
Region 0: Memory at fcfff800 (32-bit, non-prefetchable) [size=256]
Capabilities: <access denied>
Kernel driver in use: ehci-pci
Kernel modules: ehci_pci
00:13.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller [1002:4397] (prog-if 10 [OHCI])
Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:7641]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 32, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 18
NUMA node: 0
Region 0: Memory at fcffc000 (32-bit, non-prefetchable) [size=4K]
Kernel driver in use: ohci-pci
Kernel modules: ohci_pci
00:13.1 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0 USB OHCI1 Controller [1002:4398] (prog-if 10 [OHCI])
Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:7641]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 32, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 18
NUMA node: 0
Region 0: Memory at fcff7000 (32-bit, non-prefetchable) [size=4K]
Kernel driver in use: ohci-pci
Kernel modules: ohci_pci
00:13.2 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller [1002:4396] (prog-if 20 [EHCI])
Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller [1002:4396]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 32, Cache Line Size: 64 bytes
Interrupt: pin B routed to IRQ 19
NUMA node: 0
Region 0: Memory at fcfff400 (32-bit, non-prefetchable) [size=256]
Capabilities: <access denied>
Kernel driver in use: ehci-pci
Kernel modules: ehci_pci
00:14.0 SMBus [0c05]: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 SMBus Controller [1002:4385] (rev 3c)
Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:7641]
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort+ <MAbort- >SERR- <PERR- INTx-
NUMA node: 0
Capabilities: <access denied>
Kernel modules: i2c_piix4, sp5100_tco
00:14.1 IDE interface [0101]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 IDE Controller [1002:439c] (prog-if 8a [ISA Compatibility mode controller, supports both channels switched to PCI native mode, supports bus mastering])
Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:7641]
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 64
Interrupt: pin A routed to IRQ 16
NUMA node: 0
Region 0: I/O ports at 01f0 [size=8]
Region 1: I/O ports at 03f4
Region 2: I/O ports at 0170 [size=8]
Region 3: I/O ports at 0374
Region 4: I/O ports at ff00 [size=16]
Capabilities: <access denied>
Kernel driver in use: pata_atiixp
Kernel modules: pata_atiixp, ata_generic
00:14.2 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 Azalia (Intel HDA) [1002:4383]
Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:d641]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 32, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 16
NUMA node: 0
Region 0: Memory at fcff0000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
00:14.3 ISA bridge [0601]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 LPC host controller [1002:439d]
Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:7641]
Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
NUMA node: 0
00:14.4 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 PCI to PCI Bridge [1002:4384] (prog-if 01 [Subtractive decode])
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 64
NUMA node: 0
Bus: primary=00, secondary=05, subordinate=05, sec-latency=64
I/O behind bridge: [disabled] [16-bit]
Memory behind bridge: [disabled] [32-bit]
Prefetchable memory behind bridge: [disabled] [32-bit]
Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
BridgeCtl: Parity+ SERR+ NoISA+ VGA- VGA16- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
00:14.5 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI2 Controller [1002:4399] (prog-if 10 [OHCI])
Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Device [1002:4396]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 32, Cache Line Size: 64 bytes
Interrupt: pin C routed to IRQ 18
NUMA node: 0
Region 0: Memory at fcff6000 (32-bit, non-prefetchable) [size=4K]
Kernel driver in use: ohci-pci
Kernel modules: ohci_pci
00:18.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h Processor Function 0 [1022:1600]
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
NUMA node: 0
Capabilities: <access denied>
00:18.1 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h Processor Function 1 [1022:1601]
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
NUMA node: 0
00:18.2 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h Processor Function 2 [1022:1602]
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
NUMA node: 0
00:18.3 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h Processor Function 3 [1022:1603]
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
NUMA node: 0
Capabilities: <access denied>
Kernel driver in use: k10temp
Kernel modules: k10temp
00:18.4 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h Processor Function 4 [1022:1604]
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
NUMA node: 0
Kernel driver in use: fam15h_power
Kernel modules: fam15h_power
00:18.5 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h Processor Function 5 [1022:1605]
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
NUMA node: 0
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GP104 [GeForce GTX 1060 6GB] [10de:1b83] (rev a1) (prog-if 00 [VGA controller])
Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:328d]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 38
NUMA node: 0
Region 0: Memory at fd000000 (32-bit, non-prefetchable) [size=16M]
Region 1: Memory at d0000000 (64-bit, prefetchable) [size=256M]
Region 3: Memory at ce000000 (64-bit, prefetchable) [size=32M]
Region 5: I/O ports at b800 [size=128]
Expansion ROM at 000c0000 [virtual] [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: nvidia
Kernel modules: nvidia
01:00.1 Audio device [0403]: NVIDIA Corporation GP104 High Definition Audio Controller [10de:10f0] (rev a1)
Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:328d]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin B routed to IRQ 19
NUMA node: 0
Region 0: Memory at fe9f8000 (32-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 06)
Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:7641]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 17
NUMA node: 0
Region 0: I/O ports at c800 [size=256]
Region 2: Memory at fbfff000 (64-bit, prefetchable) [size=4K]
Region 4: Memory at fbff8000 (64-bit, prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: r8169
Kernel modules: r8169
03:00.0 USB controller [0c03]: Renesas Electronics Corp. uPD720201 USB 3.0 Host Controller [1912:0014] (rev 03) (prog-if 30 [XHCI])
Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:7641]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 18
NUMA node: 0
Region 0: Memory at feafe000 (64-bit, non-prefetchable) [size=8K]
Capabilities: <access denied>
Kernel driver in use: xhci-pci-renesas
Kernel modules: xhci_pci, xhci_pci_renesas
04:00.0 SATA controller [0106]: ASMedia Technology Inc. ASM1061/ASM1062 Serial ATA Controller [1b21:0612] (rev 02) (prog-if 01 [AHCI 1.0])
Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:7641]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 37
NUMA node: 0
Region 0: I/O ports at e800 [size=8]
Region 1: I/O ports at e400 [size=4]
Region 2: I/O ports at e000 [size=8]
Region 3: I/O ports at d800 [size=4]
Region 4: I/O ports at d400 [size=32]
Region 5: Memory at febffc00 (32-bit, non-prefetchable) [size=512]
Capabilities: <access denied>
Kernel driver in use: ahci
Kernel modules: ahci
** USB devices:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 0409:005a NEC Corp. HighSpeed Hub
Bus 001 Device 007: ID 0557:8021 ATEN International Co., Ltd Hub
Bus 001 Device 008: ID 0557:2213 ATEN International Co., Ltd CS682 2-Port USB 2.0 DVI KVM Switch
Bus 001 Device 016: ID 1532:00b2 Razer USA, Ltd Razer DeathAdder V3
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 002: ID 051d:0002 American Power Conversion Uninterruptible Power Supply
Bus 003 Device 003: ID 2357:0604 TP-Link TP-Link Bluetooth USB Adapter
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 002: ID 1058:264d Western Digital Technologies, Inc. easystore 264D
Bus 005 Device 003: ID 1058:25e1 Western Digital Technologies, Inc. My Passport (WD20NMVW)
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 008 Device 002: ID 06cd:0121 Keyspan USA-19hs serial adapter
Bus 009 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
-- System Information:
Debian Release: 13.3
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 6.12.63+deb13-amd64 (SMP w/8 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages linux-image-6.12.63+deb13-amd64 depends on:
ii initramfs-tools [linux-initramfs-tool] 0.148.3
ii kmod 34.2-2
ii linux-base 4.12
Versions of packages linux-image-6.12.63+deb13-amd64 recommends:
ii apparmor 4.1.1-pmx1
Versions of packages linux-image-6.12.63+deb13-amd64 suggests:
pn debian-kernel-handbook <none>
pn firmware-linux-free <none>
ii grub-pc 2.12-9+pmx2
pn linux-doc-6.12 <none>
Versions of packages linux-image-6.12.63+deb13-amd64 is related to:
pn firmware-amd-graphics <none>
pn firmware-atheros <none>
pn firmware-bnx2 <none>
pn firmware-bnx2x <none>
pn firmware-brcm80211 <none>
pn firmware-cavium <none>
pn firmware-cirrus <none>
pn firmware-intel-graphics <none>
pn firmware-intel-misc <none>
pn firmware-intel-sound <none>
pn firmware-ipw2x00 <none>
pn firmware-ivtv <none>
pn firmware-iwlwifi <none>
pn firmware-libertas <none>
pn firmware-marvell-prestera <none>
pn firmware-mediatek <none>
pn firmware-misc-nonfree <none>
pn firmware-myricom <none>
pn firmware-netronome <none>
pn firmware-netxen <none>
ii firmware-nvidia-graphics 20250410-2
pn firmware-qcom-soc <none>
pn firmware-qlogic <none>
ii firmware-realtek 20250410-2
pn firmware-samsung <none>
pn firmware-siano <none>
pn firmware-ti-connectivity <none>
pn xen-hypervisor <none>
-- no debconf information
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| From | Patrick Hibbs <hibbsncc1701@gmail.com> |
|---|---|
| Date | 2026-03-17 10:30 +0100 |
| Message-ID | <MzyUp-8aIz-1@gated-at.bofh.it> |
| In reply to | #91045 |
[Multipart message — attachments visible in raw view] — view raw
Some additional info and a hacky workaround along with suggestions for a proper fix, Problem still exists in linux-image-6.12.73+deb13-amd64. I wrote a patch to add the model detection logic from wacom_serial4 into inputattach's wacom_iv_init() function. (joystick-1.8.1/utils/inputattach.c:L637.) Adapting it to use the write() call instead of serio_write(), and to output the result as a printf() to the console. I then ran that modified version of inputattach on my bare metal host machine. This resulted in the correct tablet model being detected and written to the console by inputattach. From that we've revealed two things: 1) The kernel's command definitions are correct for this device. (Wacom Digitizer II in my case) 2) Bare metal usermode can communicate with the device just fine, but the driver in kernel mode does _not_. To confirm that, I wrote a patch for wacom_serial4 to add some additional dev_info() / dev_err() / dev_dbg() calls into it's error codepaths during wacom_connect(), wacom_setup(), and wacom_send_and_wait(). So that we could see exactly where the error was occurring. The result was that the -1 error was being returned by the serio_write() call at drivers/input/tablet/wacom_serial4.c:L431. Which was triggered by the first attempt at sending a command to the device from the kernel module. (REQUEST_MODEL_AND_ROM_VERSION at drivers/input/tablet/wacom_serial4.c:L510.) According to the header for that inline function, serio_write() can fail if the given serio structure has a NULL write fp member, so I altered the patch to test for that, but it revealed that the structure's write fp member was defined at the time of the error. The _actual_ failure is due to the Keyspan USB serial port driver being written to by wacom_serial4, before it has had the chance to send the urb data to the device via it's relevant *_outdat_callback() function. (In my specific case the usa2x_outdat_callback() function.) If wacom_serial4 calls serio_write() in rapid succession before the relevant *_outdat_callback() function can be called, then serio_write() will always return failure during subsequent calls when using that UART until the *_outdat_callback() function completes. Unfortunately, there is seemingly no mechanism for serio to report when the UART is busy waiting for an output to occur. I.e. No completion object to wait on nor event to look for. Nor is there seemingly any documentation about what the expectations of returning from serio_write() makes of the underlying UART driver. I.e. Should the underlying UART driver be ready to accept more data from the caller once serio_write() returns? Or is it the responsibility of the caller to resend the data if the underlying UART driver is still busy with servicing a previous call to serio_write() that has returned to the caller? The use of similar preexisting code elsewhere in the kernel to wacom_serial4's call to serio_write() suggests the former, or at the very least, I would assume any such similar code used in conjunction with a Keyspan USB serial adapter to have similar issues as wacom_serial4. As an additional setback for a proper fix, the Wacom Digitizer II with ROM version 1.4, (the only device I have to test), doesn't echo back sent bytes to the host. So we cannot use the interrupt handler as a workaround for the lack of a write sync mechanism in the kernel. As the handler is not invoked when writing individual bytes to the tablet during the wacom_send() call. Due to the above limitations, the attached patch for wacom_serial4 is a hack if there's ever been one. A simple delay introduced into the wacom_serial4 driver during sending to help prevent failures while sending the initial detection and setup cmds. (Along with some extra logging and clean up to make it easier to detect problems in the future.) This was enough to get the device to work on my Debian 13 system, and allowed me to use GIMP with my Digitizer II successfully. A proper fix would need official documentation from the kernel developers on what the requirements of calls to serio_write() are on UART drivers, and then either a write sync primitive for users of serio to wait on after calls to serio_write(), or some official extension of serio's API that will flush the underlying UART driver's write callback so it's ready for new data immediately upon return to the caller. (Maybe something like "serio_write_and_flush()"?) Have a good Day! -Patrick Hibbs
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