Here's the fix for Oracular.
** Changed in: mesa (Ubuntu)
Status: Confirmed => Won't Fix
** Patch added: "webkit2gtk_2.44.0-2ubuntu1.debdiff"
https://bugs.launchpad.net/ubuntu/+source/webkit2gtk/+bug/2037015/+attachment/5772919/+files/webkit2gtk_2.44.0-2ubuntu1.debdiff
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https://bugs.launchpad.net/bugs/2037015
Title:
Screen corruption of webkit2gtk apps in X11 on Raspberry Pi, such as
during install
Status in Webkit:
Confirmed
Status in mesa package in Ubuntu:
Won't Fix
Status in webkit2gtk package in Ubuntu:
In Progress
Bug description:
[ Impact ]
Screen corruption of webkit2gtk apps in X11 on Raspberry Pi, such as
during install.
[ Test Plan ]
1. Log into a Xorg session on a Raspberry Pi 4/400.
2. Open the default Help app by clicking the question mark icon in the
dock or by running 'yelp'.
3. Verify it didn't crash and the window contents are not corrupt.
[ Where problems could occur ]
The fix is limited to webkit2gtk so can only affect apps such as yelp
or the Raspberry Pi installer.
[ Other Info ]
During the initial configuration of the Ubuntu Desktop for Raspberry
Pi (the oem-config process, derived from ubiquity), on the Mantic beta
images, after the various pages of information have been filled out
and the process moves onto configuration, the "slide deck" that is
usually displayed during the process appeared corrupted as if a
horizontal stride were incorrectly set somewhere.
I'm attached a photo of the screen (as, while I could take a
screenshot during the process, it evidently wasn't saved somewhere
persistent).
I originally thought this might be a regression of LP: #1924251 as the
corruption in the window looks very similar (incorrect horizontal
stride causing "banding"), but I tested the embedded browser (via the
help system) after completing setup and it worked perfectly so that's
*probably* unrelated.
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