please try the latest stable release from
https://launchpad.net/~kisak/+archive/ubuntu/kisak-mesa
then at least we'd know if it's fixed in 21.3.x
** Changed in: mesa (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1958242
Title:
mesa update freeze/crash screen before login
Status in mesa package in Ubuntu:
Incomplete
Bug description:
After updating my laptop after a long trip. It starts to bootm, then
screen goes black with the mouse pointer hanging over, sddm does not
start.
This symptoms I saw them before and were related to mesa libraries. See
https://bugs.launchpad.net/ubuntu/+source/sddm/+bug/1909171 for details on that.
But the actual problem seems somewhat different this time.
Furthermore dmesg shows:
[66.441074] QSGRenderThread[1134]: segfault at 39 ip 00007f1ca6c7311b sp
00007f1c98b76630 error 4 in r300_dri.so[7f1ca660b000+10ab000]
[66.441088] Code: b6 40 2d eb ef 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 31
f6 e9 95 a2 f9 ff 0f 1f 44 00 00 41 54 48 8d 15 97 b8 b2 00 55 53 <0f> b6 47 39
48 89 f3 48 63 04 82 48 01 d0 3e ff e0 0f 1f 40 00bd
r300_dri.so is from the package libgl1-mesa-dri
I applied the same workaround I did for the previous time that mesa
was broken: downgrade to previous mesa version.
I went to Ctrl+Alt-F2, logged in and:
**********
sudo apt install libglapi-mesa=21.0.3-0ubuntu0.3~20.04.5
libglx-mesa0=21.0.3-0ubuntu0.3~20.04.5
libgl1-mesa-dri=21.0.3-0ubuntu0.3~20.04.5
libegl-mesa0=21.0.3-0ubuntu0.3~20.04.5 libgbm1=21.0.3-0ubuntu0.3~20.04.5
sudo apt-mark hold libglapi-mesa=21.0.3-0ubuntu0.3~20.04.5
libglx-mesa0=21.0.3-0ubuntu0.3~20.04.5
libgl1-mesa-dri=21.0.3-0ubuntu0.3~20.04.5
libegl-mesa0=21.0.3-0ubuntu0.3~20.04.5 libgbm1=21.0.3-0ubuntu0.3~20.04.5
***********
Now everything works fine. Other than the mentioned mesa packages
everything else is fully updated.
=== In short something got broken again in mesa 21.2.6, downgrading to
21.0.3 fixes the issue. ===
Running Lubuntu 20.04
Kernel:
5.4.0-94-generic #106-Ubuntu SMP Thu Jan 6 23:58:14 UTC 2022 x86_64 x86_64
x86_64 GNU/Linux
lsb_release -rd:
Description: Ubuntu 20.04.3 LTS
Release: 20.04
GPU:
Advanced Micro Devices [AMD/ATI]
RS482M [Mobility Radeon Xpress 200]
driver: radeon
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