> I never tested removing the patch > (https://github.com/torvalds/linux/commit/4dbd11796f3a8eb95647507befc41995458a4023). > Is that something I should do? I'm happy to do additional testing for a > permanent solution.
If the quirk patch works for you; I don't see a need to do that. > So just curious, what are the next steps? Is this going to be pushed to the > mainline? Let me re-open this so we can talk about what to do about it. The OEM's EC is an opaque black box. This /seems/ to be a race condition with the Linux kernel and the EC. * Upstreaming the quirk is one possibility. This means that every time we see this we add to the quirk list. * Adding a delay for all hardware is another possibility. This seems relatively unfair to other hardware not affected by this issue. * Look into whether there is anything different in what's sent to the EC in the delay vs no delay case. I thought that there shouldn't be anything different since we're in the s2idle loop, but you can double check this by: 1) Turning on dynamic debug messages for drivers/acpi/ec.c. 2) Run sequence to reproduce issue on unpatched kernel. 3) Run sequence to reproduce issue on patched kernel. 4) Compare the sequences and see if there are any extra events in the patched kernel. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2088733 Title: low CPU frequency after wake up AMD Ryzen Status in Linux: Confirmed Status in linux package in Ubuntu: Confirmed Bug description: After wake up I can see at least once a week issue with CPU frequency not going up. When running: $ watch lscpu -e=CPU,MHZ standard output looks like: CPU MHZ 0 400.0000 1 1383.2480 2 400.0000 3 400.0000 4 400.0000 5 2699.7561 6 1288.0500 7 400.0000 8 400.0000 9 400.0000 10 400.0000 11 400.0000 12 3244.0720 13 400.0000 14 400.0000 15 1295.9050 while when the issue occurs, I can't see 600 Mhz or higher values in the same graph. Which also means that response time of computer is much lower and everything feels lazy. Restart fixes the issue or plug power cable off and in again. My CPU is AMD Ryzen™ 7 PRO 7840HS w/ Radeon™ 780M Graphics × 16 My kernel version: 6.8.0-48-generic #48-Ubuntu SMP PREEMPT_DYNAMIC Fri Sep 27 14:04:52 UTC 2024 OS version: Ubuntu 24.04.1 LTS My laptop: HP ZBook Firefly 14 inch G10 A Mobile Workstation PC I know about one more person with same machine type with the issue and there is also this question on askubuntu which says there is third person with this issue. https://askubuntu.com/questions/1531956/cpu-too-slow-after-waking-up- in-ubuntu-24-04-1 This bug looks pretty similar however should be fixed already, so creating new one https://bugs.launchpad.net/ubuntu/+source/linux-hwe-5.19/+bug/2007718 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/2088733/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
