http://bugzilla.opensuse.org/show_bug.cgi?id=1190200 Bug ID: 1190200 Summary: Severe graphics glitches in KDE applications when compositor is disabled Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: Other OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel Assignee: kernel-bugs@opensuse.org Reporter: psychonaut@nothingisreal.com QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- I normally run KDE with the compositor disabled. In this mode, all KDE applications exhibit severe screen corruption: all new text or graphics that appear have a garbled appearance, to the extent that text is completely illegible. The corruption sometimes disappears after a few seconds or after the window is scrolled. The problem does not affect GTK+ applications. The problem can be worked around by using systemsettings5 to tell KDE to enable the compositor at startup. However, simply changing the rendering backend (XRender vs. OpenGL) has no effect. I am using an onboard Intel HD Graphics 630 controller with the i915 driver. I'm not sure if it's the kernel driver/firmware which is causing the problem, but based on past experience with Intel graphics glitches, I am tentatively assuming it is. The problem occurred after updating Tumbleweed from version 20210810 to version 20210827. (In case it's relevant, this included an update of kernel-default 5.13.8 to 5.13.12, and from kernel-firmware-i915 from 20210719 to 20210812.) The problem persists in version 20210830. Booting from the old 5.13.8 kernel doesn't work around the problem. I could also try reverting kernel-firmware-i915 if I can find or build an old package. -- You are receiving this mail because: You are the assignee for the bug.