Sounds like the fix is finally working in cosmic gdm version
3.30.0-0ubuntu2...?
I don't have the power to sponsor things or help any more. You will just
need to prepare a new patch for bionic, attach it here and wait for
ubuntu-sponsors.
** Changed in: gdm3 (Ubuntu)
Status: New => Fix Released
** No longer affects: mesa (Ubuntu)
** Changed in: mutter (Ubuntu)
Status: New => Won't Fix
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https://bugs.launchpad.net/bugs/1780076
Title:
18.04 login screen is skewed/distorted (incorrect stride) when using
hibmc_drm graphics
Status in gdm3 package in Ubuntu:
Fix Released
Status in mutter package in Ubuntu:
Won't Fix
Bug description:
[Impact]
* The login screen is blur, with Huawei's Hi1710 chipset. And below
is the hardware information.
05:00.0 VGA compatible controller [0300]: Huawei Technologies Co.,
Ltd. Hi1710 [iBMC Intelligent Management system chip w/VGA support]
[19e5:1711] (rev 01)
* It's really big effect for our customer when they use the arm
server. It's an hardware specific issue, and I've debugged with the
mutter for a while upstream's help, but no luck. And the workaround
patches was accepted by upstream and now in 18.10.
[Test Case]
* It's an hardware specific issue, installed the 18.04 on Huawei's
Hi1710 arm server. After boot up, you will found the login screen is
distorted.
[Regression Potential]
* It's just a kind of workaround, we add one the udev rule to skip
Huawei's chipset, which won't affects other platform.
[Other Info]
* Upstream: https://gitlab.gnome.org/GNOME/mutter/issues/219
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