#1108614 chromium: visual artefacts since 138.0.7204.49-1~deb12u1

Package:
chromium
Source:
chromium
Description:
web browser
Submitter:
Richard Lewis
Date:
2025-09-18 20:17:01 UTC
Severity:
normal
#1108614#5
Date:
2025-07-01 14:06:46 UTC
From:
To:
The latest chromium security update now renders many pages with
annoying visual artefacts - lwn.net, salsa.debian.org, gmail.com --
mainly when using (moving or clicking) the mouse

i tried downgrading to 135.0.7049.95-1~deb12u1 but that version then
refused to start (i suppose some setttings are incompatible) . do i
need to do something else to make the downgrade work?

i note my android phone has a lower version, 137, which seems to be in
stable-proposed-updates , so maybe 138 is a bad version?

(if you want to know what graphics card is used the please let me know
how to find that out - i expect it is intel of some kind. arch is
amd64)

thank-you for maintaining chromium, it normally works great!

#1108614#10
Date:
2025-07-01 16:21:01 UTC
From:
To:
Hi,

Thanks for the report. In general it's helpful to know if you're running
wayland or X, and your desktop environment.

138 does seem a bit buggier than 137, and so far they haven't really
backported many fixes from 139. I'll keep an eye on this. There's a bug
with Skia Graphite enabled that might be what you're seeing:
https://issues.chromium.org/issues/428802472

Going to chrome://gpu will tell you if Skia Graphite is enabled or not.
On my end it is disabled, and I don't see any artifacts. If it is
enabled, please try --disable-skia-graphite and report back.

Thanks,
Andres

#1108614#15
Date:
2025-07-01 19:45:30 UTC
From:
To:
i am using gnome with the default (i think that is wayland?  following
instructions on the internet I did

loginctl -p Type show-session <id> and it says Type=wayland
)
Graphics Feature Status
Canvas: Hardware accelerated
Direct Rendering Display Compositor: Disabled
Compositing: Hardware accelerated
Multiple Raster Threads: Disabled
OpenGL: Enabled
Rasterization: Hardware accelerated on all pages
Raw Draw: Disabled
Skia Graphite: Disabled
TreesInViz: Disabled
Video Decode: Hardware accelerated
Video Encode: Software only. Hardware acceleration disabled
Vulkan: Disabled
WebGL: Hardware accelerated
WebGL2: Hardware accelerated
WebGPU: Disabled
WebNN: Disabled

it didnt help, but i see a lot of

ERROR:ui/gl/gl_surface_presentation_helper.cc:260]
GetVSyncParametersIfAvailable() failed for 1 times!

which led me to
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=901831 which
suggested --use-gl=osmesa which seems to fix it.

It feels a bit slower, but at least i can see things again!

#1108614#18
Date:
2025-09-17 00:43:28 UTC
From:
To:
Hi,

Can you let me know if you're still seeing this issue with chromium 140?

Thanks,
Andres

On Tue, 1 Jul 2025 20:45:30 +0100 Richard Lewis <richard.lewis.debian@googlemail.com> wrote:

#1108614#23
Date:
2025-09-18 20:15:25 UTC
From:
To:
Thanks for the reminder - i didnt check any earlier versions, but this
is indeed fixed with 140.0.7339.127-1~deb13u1