(In reply to Mario Limonciello (AMD) from comment #112) > That's quite an interesting result. Let me ask this - how quickly are you > unplugging / plugging in the adapter?
More than 10 seconds Particularly after you've closed the > lid but before unplugging the adapter. More than 10 seconds, just because this is the use case where I first saw this problem. I close the lid, unplug the adapter, put everything in my bag, go to another place, plug the adapter back in, and then open the lid. > Without the revert if you follow this (specific) timing does it still happen? > > 1) Close lid > 2) Wait 10 seconds > 3) Unplug adapter > 4) Wait 10 seconds > 5) Plug in adapter > 6) Wait 10 seconds > 7) Open laptop, check frequency The frequency problem occurs: - 544 MHz in power save mode, with some spikes to 1101 MHz; - 1101 MHz in performance and balanced profiles, with some cores occasionally dropping to 544 MHz. -- 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: Invalid 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
