Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.kernel > #72793

Bug#993670: linux-image-5.10.0-8-686: Screen corruption using radeon kernel driver

Cross-posted to 2 groups.

Show all headers | View raw

[Multipart message — attachments visible in raw view] - view raw

Package: linux-image-5.10.0-8-686
Version: 5.10.46-4
Severity: important
Tags: patch

Dear maintainer,

After updating from buster to bullseye I've noticed that the image
displayed on my older computer, 32-bit Pentium 4 using ATI Radeon X1950
AGP video card is severely corrupted in the graphical (Xorg and Wayland)
mode: all kinds of black and white stripes across the screen, some
letters missing, etc.

I've checked several options (Xorg drivers, Wayland instead of Xorg and
so on), but the problem persisted. I've managed to find that the problem
was in the kernel, as everything worked well with buster's kernel with
everything else being from bullseye.

I have managed to find the culprit of that corruption, that is the
commit 33b3ad3788aba846fc8b9a065fe2685a0b64f713 on the linux kernel.
Reverting this commit and building the kernel with that commit reverted
fixes the problem, and I'm writing this bug report with the kernel I've
built with that commit reverted.

Apparently this problem is somewhat known, as I can tell after googling
for the commit id, see https://lkml.org/lkml/2020/1/9/518 this link for
example.

Mageia distro, for example, reverted this commit in the kernel they are
building: http://sophie.zarb.org/distrib/Mageia/7/aarch64/by-pkgid/b9193a4f85192bc57f4d770fb9bb399c/files/32
and I would like to suggest adding the reverting patch (attached) to the
debian kernel as well (at least for 32-bit x86 architecture as 64-bit is
unaffected).

This took me several days to debug, so I hope it will be included in one
of the point releases :)

Thanks in advance!


-- System Information:
Debian Release: 11.0
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 5.10.0-8-686 (SMP w/1 CPU thread)
Kernel taint flags: TAINT_UNSIGNED_MODULE
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)

Versions of packages linux-image-5.10.0-8-686 depends on:
ii  initramfs-tools [linux-initramfs-tool]  0.140
ii  kmod                                    28-1
ii  linux-base                              4.6

Versions of packages linux-image-5.10.0-8-686 recommends:
pn  apparmor             <none>
pn  firmware-linux-free  <none>

Versions of packages linux-image-5.10.0-8-686 suggests:
pn  debian-kernel-handbook  <none>
ii  extlinux                3:6.04~git20190206.bf6db5b4+dfsg1-3+b1
pn  linux-doc-5.10          <none>

Back to linux.debian.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

Bug#993670: linux-image-5.10.0-8-686: Screen corruption using radeon kernel driver Krylov Michael <sqarert@gmail.com> - 2021-09-04 17:40 +0200
  Bug#993670: linux-image-5.10.0-8-686: Screen corruption using radeon kernel driver Mikhail Krylov <sqarert@gmail.com> - 2021-09-04 18:50 +0200
    Bug#993670: linux-image-5.10.0-8-686: Screen corruption using radeon kernel driver Diederik de Haas <didi.debian@cknow.org> - 2022-04-18 17:30 +0200
      Bug#993670: linux-image-5.10.0-8-686: Screen corruption using radeon kernel driver Mikhail Krylov <sqarert@gmail.com> - 2022-04-23 15:20 +0200
        Bug#993670: linux-image-5.10.0-8-686: Screen corruption using radeon kernel driver Diederik de Haas <didi.debian@cknow.org> - 2022-04-23 17:00 +0200
          Bug#993670: linux-image-5.10.0-8-686: Screen corruption using radeon kernel driver Mikhail Krylov <sqarert@gmail.com> - 2022-04-23 19:10 +0200
  Processed: Re: Bug#993670: linux-image-5.10.0-8-686: Screen  corruption using radeon kernel driver "Debian Bug Tracking System" <owner@bugs.debian.org> - 2022-04-23 17:00 +0200
  Bug#993670: Screen corruption using radeon kernel driver Mikhail Krylov <sqarert@gmail.com> - 2022-04-25 18:10 +0200

csiph-web