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Bug#1041197: "ata2.00: supports DRM functions and may not be fully accessible" and ACPI commands filtered out or rejected

From	AlMa <AlMa0@ro.ru>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1041197: "ata2.00: supports DRM functions and may not be fully accessible" and ACPI commands filtered out or rejected
Date	2023-07-15 17:20 +0200
Message-ID	<GRPdT-qM5-3@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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Package: linux-image-6.1.0-10-amd64
Version: 6.1.37-1

In the depths of my journal I discover the following two warnings 
(“ata2.00: supports DRM functions and may not be fully accessible” are 
marked orange):

$ grep -i ata2 -C 1 /tmp/j.log
Jul 15 15:21:43 AnonymizedMachineName kernel: ata1: SATA max UDMA/133 
abar m2048@0xf7f36000 port 0xf7f36100 irq 28
Jul 15 15:21:43 AnonymizedMachineName kernel: ata2: SATA max UDMA/133 
abar m2048@0xf7f36000 port 0xf7f36180 irq 28
Jul 15 15:21:43 AnonymizedMachineName kernel: ata3: SATA max UDMA/133 
abar m2048@0xf7f36000 port 0xf7f36200 irq 28
--
Jul 15 15:21:43 AnonymizedMachineName kernel: usb 3-1.8: New USB device 
found, idVendor=0a5c, idProduct=5801, bcdDevice= 1.01
Jul 15 15:21:43 AnonymizedMachineName kernel: ata2: SATA link up 6.0 
Gbps (SStatus 133 SControl 300)
Jul 15 15:21:43 AnonymizedMachineName kernel: usb 3-1.8: New USB device 
strings: Mfr=1, Product=2, SerialNumber=3
Jul 15 15:21:43 AnonymizedMachineName kernel: ata2.00: ACPI cmd 
f5/00:00:00:00:00:00(SECURITY FREEZE LOCK) filtered out
Jul 15 15:21:43 AnonymizedMachineName kernel: usb 3-1.8: Product: 5880
Jul 15 15:21:43 AnonymizedMachineName kernel: ata2.00: ACPI cmd 
b1/c1:00:00:00:00:00(DEVICE CONFIGURATION OVERLAY) filtered out
Jul 15 15:21:43 AnonymizedMachineName kernel: usb 3-1.8: Manufacturer: 
Broadcom Corp
Jul 15 15:21:43 AnonymizedMachineName kernel: ata2.00: ACPI cmd 
00/00:00:00:00:00:a0(NOP) rejected by device (Stat=0x51 Err=0x04)
Jul 15 15:21:43 AnonymizedMachineName kernel: usb 3-1.8: SerialNumber: 
0123456789ABCD
Jul 15 15:21:43 AnonymizedMachineName kernel: usb 3-1.8: config 0 
descriptor??
Jul 15 15:21:43 AnonymizedMachineName kernel: ata2.00: supports DRM 
functions and may not be fully accessible
Jul 15 15:21:43 AnonymizedMachineName kernel: ata2.00: ATA-11: Samsung 
SSD 860 PRO 1TB, RVM01B6Q, max UDMA/133
Jul 15 15:21:43 AnonymizedMachineName kernel: ata2.00: 2000409264 
sectors, multi 1: LBA48 NCQ (depth 32), AA
Jul 15 15:21:43 AnonymizedMachineName kernel: ata2.00: Features: Trust 
Dev-Sleep NCQ-sndrcv
Jul 15 15:21:43 AnonymizedMachineName kernel: ata2.00: ACPI cmd 
f5/00:00:00:00:00:00(SECURITY FREEZE LOCK) filtered out
Jul 15 15:21:43 AnonymizedMachineName kernel: ata2.00: ACPI cmd 
b1/c1:00:00:00:00:00(DEVICE CONFIGURATION OVERLAY) filtered out
Jul 15 15:21:43 AnonymizedMachineName kernel: ata2.00: ACPI cmd 
00/00:00:00:00:00:a0(NOP) rejected by device (Stat=0x51 Err=0x04)
Jul 15 15:21:43 AnonymizedMachineName kernel: ata2.00: supports DRM 
functions and may not be fully accessible
Jul 15 15:21:43 AnonymizedMachineName kernel: ata2.00: configured for 
UDMA/133
Jul 15 15:21:43 AnonymizedMachineName kernel: scsi 1:0:0:0: 
Direct-Access     ATA      Samsung SSD 860  1B6Q PQ: 0 ANSI: 5
--
Jul 15 15:21:43 AnonymizedMachineName kernel: ata3.00: Enabling 
discard_zeroes_data
Jul 15 15:21:43 AnonymizedMachineName kernel: ata2.00: Enabling 
discard_zeroes_data
Jul 15 15:21:43 AnonymizedMachineName kernel: sd 2:0:0:0: [sdb] 
1953525168 512-byte logical blocks: (1.00 TB/932 GiB)
--
Jul 15 15:21:43 AnonymizedMachineName kernel: sd 1:0:0:0: [sdc] 
Preferred minimum I/O size 512 bytes
Jul 15 15:21:43 AnonymizedMachineName kernel: ata2.00: Enabling 
discard_zeroes_data
Jul 15 15:21:43 AnonymizedMachineName kernel:  sdc: sdc1 sdc2

In plain English, what do the two warnings “ata2.00: supports DRM 
functions and may not be fully accessible” tell us?  What does DRM stand 
for in this context?  There are also rejected ACPI commands and ACPI-cmd 
errors marked as non-errors (i.e., in usual, maintext gray-white), e.g., 
“ACPI cmd 00/00:00:00:00:00:a0(NOP) rejected by device (Stat=0x51 
Err=0x04)”.  Is there a configuration issue; do we have to worry about 
these warnings and errors?  The machine is a Dell Mobile Precision 
M6700; ata2 most likely refers to an internal 2.5-inch SATA SSD.  The 
machine has problems later during boot, so it's important for us to know 
the extent and the implications of the warnings and errors here.

Gratefully,
AlMa

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Bug#1041197: "ata2.00: supports DRM functions and may not be fully accessible" and ACPI commands filtered out or rejected AlMa <AlMa0@ro.ru> - 2023-07-15 17:20 +0200

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