[Bug 1780076] [NEW] 18.04 login screen is skewed/distorted (incorrect stride) when using hibmc_drm graphics

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Bin Li (binli):

Upstream: https://gitlab.gnome.org/GNOME/mutter/issues/219

We found the login screen is blur, with Huawei's chip.

05:00.0 VGA compatible controller [0300]: Huawei Technologies Co., Ltd.
Hi1710 [iBMC Intelligent Management system chip w/VGA support]
[19e5:1711] (rev 01)

When we set the Wayland to disable, it could login.

[daemon]
# Uncoment the line below to force the login screen to use Xorg
WaylandEnable=false

** Affects: gdm3 (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: mesa (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: mutter (Ubuntu)
     Importance: Undecided
         Status: New

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18.04 login screen is skewed/distorted (incorrect stride) when using hibmc_drm graphics
https://bugs.launchpad.net/bugs/1780076
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