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bug#35669: Mesa is failing an assertion
From: |
Marius Bakke |
Subject: |
bug#35669: Mesa is failing an assertion |
Date: |
Fri, 10 May 2019 20:01:12 +0200 |
User-agent: |
Notmuch/0.28.3 (https://notmuchmail.org) Emacs/26.2 (x86_64-pc-linux-gnu) |
Joshua Branson <address@hidden> writes:
> Hello I am getting a weird mesa assertion when I try to start sway.
>
> sway: ../mesa-18.3.5/src/mesa/program/prog_parameter.c:247:
> _mesa_add_parameter: Assertion `0 < size && size <=4' failed.
> Aborted.
>
> Is anyone else getting this issue?
I've seen this too and went as far as bisecting Mesa:
<https://bugs.freedesktop.org/show_bug.cgi?id=110608>.
...after bisecting Guix to e6a668ec7303a71f87e4c9354b1458e555058c63.
(Guix makes this process surprisingly easy btw, someone should write a
blog post about it.)
The fix is to wipe Mesas shader cache:
$ rm -rf "$HOME/.cache/mesa_shader_cache"
You may also need to do the same for your display manager, if any:
$ sudo rm -rf "/var/lib/{sddm,gdm}/.cache/mesa_shader_cache"
I don't know why Mesa fails to do that on its own. I can't find a lot
on the internet about this issue, so I suspect it is a problem specific
to Guix.
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