I updated my kernel to 5.9 from 5.8.14. And now, my window manager started showing some glitches and flickers while using it. It is a kernel problem, because 5.8.14 does not have the same issue. My driver is Intel's integrated graphics card. i915. It's name is "Intel Corporation HD Graphics 5500" in lspci output. Please solve this problem as soon as possible. Thank you. And if this is somehow my problem, i'm sorry for bothering you.
My confirm an issue. When I restart(or reboot or start again after shutdown) QEMU Gentoo guest system with new 5.9.0 kernel, it hang during local.d scripts executing, my surmise it occurs during xfce starting. Not only the guest system hangs, but also virt-manager and even libvirtd cannot be killed on the gentoo system host and it require rebooting my host os.
How is this: (In reply to ysf.hkmt.cksr from comment #0) > some glitches and flickers while using it the same issue as this: (In reply to Jan Baklo from comment #1) > it hang during local.d scripts executing The first report describes (graphical) glitches, but you describe a system hanging. Please file a separate bug report so as to not clutter up this one any more with unrelated problems.
(In reply to Jeroen Roovers from comment #2) I suspect that both bugs stem from the same issue in the new kernel. It turned out that the problem I described did not arise because of the new kernel of the guest system, but because of the same kernel version on the host system, because the issue was repeated with different guests OSs. I have a similar gentoo configuration with i915 and ~amd64 and also has updated from 5.8.14 to 5.9.0, but now already rolled back to 5.8.14 and the problem disappeared.
This is really not something a distro can solve without an upstream report.
