Thanks, it seems you already pinned down the issue, I'll investigate how
to get the newer Mesa in (I think that's provided by a gnome-* snap) and
all the following is just for completeness.

Can you attach the following information?

--->
snap info chromium firefox
snap connections chromium
snap connections firefox
<---

> In order to test if the system MESA has the fix while the Chromium
snaps does not, I unpacked it and ran the Chromium binary against system
libraries.

In general, for testing purposes you can run the unconfined binary
directly by calling /snap/chromium/current/usr/lib/chromium-
browser/chrome or /snap/firefox/current/usr/lib/firefox/firefox.

You can also verify if an issue is related to hardware acceleration by
passing --disable-gpu.

** Also affects: firefox via
   https://gitlab.freedesktop.org/mesa/mesa/-/issues/9695
   Importance: Unknown
       Status: Unknown

** Project changed: firefox => mesa

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to firefox in Ubuntu.
https://bugs.launchpad.net/bugs/2035360

Title:
  GPU hangs in SketchUp on Intel gen12 due to outdated MESA library

Status in Mesa:
  Unknown
Status in chromium-browser package in Ubuntu:
  New
Status in firefox package in Ubuntu:
  New

Bug description:
  When opening a SketchUp model (example) in Firefox or Chromium, after
  ~5 seconds, the SketchUp logo freezes for ~4 seconds, and we see a
  blank page. The logs show the GPU hang and browser rendering context
  failed to initialise.

  This has 100% reproducibility on my 12-gen GPU.

  On this system with Ubuntu 23.04, I have always seen a GPU hang with the 
stock Ubuntu kernel or mainline.
  Log files as attachment

  - the output of 'dmesg' is at https://quora.org/OJnlVgn4xZ/dmesg.txt
  - the output of 'dmesg' with kernel boot args 'drm.debug=0x1e 
log_buf_len=16M' is at https://quora.org/OJnlVgn4xZ/dmesg-debug.txt
  - the output of /sys/class/drm/card0/error is at 
https://quora.org/OJnlVgn4xZ/i915-error.txt

  Since I was able to cause failure uncontained to the rendering process
  when performing this 5-8 times, there is an argument that this is a
  security (DoS) issue, though I'll let someone else make a judgement.

To manage notifications about this bug go to:
https://bugs.launchpad.net/mesa/+bug/2035360/+subscriptions


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