Bug 106657

Summary: nouveau driver causes black graphic issues on gnome apps
Product: xorg Reporter: Geroge T <reportbug>
Component: Driver/nouveauAssignee: Nouveau Project <nouveau>
Status: NEW --- QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium    
Version: unspecified   
Hardware: Other   
OS: All   
i915 platform: i915 features:
Description Flags
Xorg.0.log none

Description Geroge T 2018-05-25 19:36:15 UTC
With nvidia proprietary driver no problem, but with nouveau, some gnome apps display black color items. See attachments. It happen on tested kernels "linux-image-4.15.0-22-generic" and "linux-image-4.15.0-23-generic" on ubuntu bionic-proposed.
Comment 1 Geroge T 2018-05-25 19:36:53 UTC
Created attachment 139766 [details]
Comment 2 Geroge T 2018-05-25 19:37:31 UTC
Created attachment 139767 [details]
Comment 3 Geroge T 2018-05-25 19:37:56 UTC
The black patterns appear when moving the mouse over the items of the GUI.
Comment 4 Geroge T 2018-05-25 19:38:29 UTC
Probably related:

Comment 5 Ilia Mirkin 2018-05-25 19:43:09 UTC
What GPU is this?

Check your xorg log. Are you using nouveau or modeset? If the latter, please use nouveau.
Comment 6 Geroge T 2018-05-25 19:53:11 UTC
If I open the gnome software on Plasma desktop same issue for those apps. KDE apps apparently are not affected.
Comment 7 Geroge T 2018-05-26 22:39:36 UTC
(In reply to Ilia Mirkin from comment #5)
> What GPU is this?
> Check your xorg log. Are you using nouveau or modeset? If the latter, please
> use nouveau.

Do you mean this:

[    18.750] (==) Matched modesetting as autoconfigured driver 2
[    18.750] (II) LoadModule: "modesetting"
[    18.750] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
[    18.750] (II) Module modesetting: vendor="X.Org Foundation"
[    18.750] (==) Matched modesetting as autoconfigured driver 2
[    18.751] (II) LoadModule: "modesetting"
[    18.751] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
[    18.751] (II) Module modesetting: vendor="X.Org Foundation"
[    18.751] (II) UnloadModule: "modesetting"
[    18.751] (II) Unloading modesetting
[    18.751] (II) Failed to load module "modesetting" (already loaded, 0)
[    18.751] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
[    18.751] (II) modeset(0): using drv /dev/dri/card0
[    18.751] (II) modeset(0): Creating default Display subsection in Screen section

01:00.0 VGA compatible controller: NVIDIA Corporation GP104M [GeForce GTX 1080 Mobile] (rev a1)
	Subsystem: Micro-Star International Co., Ltd. [MSI] GP104M [GeForce GTX 1080 Mobile]
	Kernel driver in use: nouveau
	Kernel modules: nvidiafb, nouveau
Comment 8 Geroge T 2018-05-26 22:53:02 UTC
Created attachment 139796 [details]
Comment 9 Geroge T 2018-05-26 22:54:48 UTC
How do I switch from modeset to nouveau?
Comment 10 Ilia Mirkin 2018-05-26 23:00:02 UTC
[    18.750] (II) LoadModule: "nouveau"
[    18.750] (WW) Warning, couldn't open module nouveau
[    18.750] (II) UnloadModule: "nouveau"
[    18.750] (II) Unloading nouveau
[    18.750] (EE) Failed to load module "nouveau" (module does not exist, 0)

You need to install xf86-video-nouveau. If you're unsure of how to do this on your distro, you need to find distro-specific support to help with that.
Comment 11 Geroge T 2018-05-27 12:10:42 UTC
Fixed installing xserver-xorg-video-nouveau on ubuntu

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