Public bug reported:
Description
I am consistently experiencing a critical issue where the system fails to
properly resume from hibernation. The process is extremely slow and results in
only one of my two monitors waking up. The system then becomes mostly
unresponsive, and logs show a soft lockup.
Steps to Reproduce
Set up the system with hibernation enabled and configured (swap partition or
swapfile is used and correctly configured in GRUB).
Hibernate the system.
Power the system back on to resume.
Expected Behavior
The system should resume from hibernation within a reasonable timeframe (a few
seconds) and restore the full desktop environment across both monitors.
Actual Behavior
The resume process is extremely slow (over 20 seconds). After the desktop
appears, only one monitor wakes up, and the system is largely unresponsive.
System Information
Operating System: Kubuntu 25.04
Kernel Version: 6.14.0-29-generic
CPU: AMD Ryzen 9 7950X
GPU: AMD Radeon RX 7900 XTX
Motherboard: MSI PRO X670-P WIFI (MS-7D67), BIOS 1.M0 05/14/2025
Relevant Log Excerpts
journalctl -b -1 shows a soft lockup in the kernel related to the amdgpu driver
during a display commit operation. The log points to a specific function
dcn32_smu_wait_get_hard_min_status getting stuck.
Sep 03 17:03:50 control kernel: watchdog: BUG: soft lockup - CPU#15 stuck for
21s! [kwin_wayland:2358]
... (rest of the log)
Sep 03 17:03:50 control kernel: Call Trace:
...
Sep 03 17:03:50 control kernel: dcn32_smu_wait_get_hard_min_status+0x50/0x2c0
[amdgpu]
...
Sep 03 17:03:50 control kernel: amdgpu_dm_atomic_commit_tail+0xda/0x1230
[amdgpu]
...
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "Output from journalctl -b -1"
https://bugs.launchpad.net/bugs/2121993/+attachment/5905105/+files/journalctl.txt
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https://bugs.launchpad.net/bugs/2121993
Title:
BUG: CPU soft lockup on resume from hibernation with amdgpu on AMD
7900XTX GPU
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