*** This bug is a duplicate of bug 1956401 ***
https://bugs.launchpad.net/bugs/1956401
Thank you for the report and information! We're working to get a fix
out. Please refer to bug 1956401 for updates
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*** This bug is a duplicate of bug 1956401 ***
https://bugs.launchpad.net/bugs/1956401
** This bug is no longer a duplicate of bug 1956396
kernel 5.13.0-23 extremely slow boot on AMD proc/graphics
** This bug has been marked a duplicate of bug 1956401
amdgpu hangs for 90 seconds at a
*** This bug is a duplicate of bug 1956396 ***
https://bugs.launchpad.net/bugs/1956396
A similar issue occurred on 5.6.x kernels:
https://askubuntu.com/questions/1240879/rx-5500-xt-ubuntu-20-10-instability-crashing-drmamdgpu-dm-commit-planes-cons
Looks like it's been known since last
*** This bug is a duplicate of bug 1956396 ***
https://bugs.launchpad.net/bugs/1956396
** This bug has been marked a duplicate of bug 1956396
kernel 5.13.0-23 extremely slow boot on AMD proc/graphics
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Yes, the reporter of bug 1956396 was not able to run apport. I was able
to open gnome-terminal, so I reported it by running ubuntu-bug linux.
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https://bugs.launchpad.net/bugs/1956408
This one and bug 1956396 look like duplicates.
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https://bugs.launchpad.net/bugs/1956408
Title:
Ubuntu 21.10 very slow after kernel update to 5.13.0-23-generic
To manage notifications
It appears to be a problem with AMD GPU. This extract from my dmesg may
help.
Jan 5 10:13:12 zen kernel: [1.254538] [drm] Initialized amdgpu 3.41.0
20150101 for :08:00.0 on minor 0
Jan 5 10:13:12 zen kernel: [4.288402] amdgpu :08:00.0:
[drm:amdgpu_ib_ring_tests [amdgpu]]
My current workaround is to go into advanced options for ubuntu from the
grub menu while starting the computer, and select an earlier kernel
version, 5.13.0-22-generic in my case.
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I am facing with the same issue on a Lenovo Thinkpad E495 with AMD Ryzen
7 3700. Nothing (Firefox, Thunderbird etc.) works properly. Boot and
reboot are super slow.
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