(In reply to Mario Limonciello (AMD) from comment #101) > Those of you that can still reproduce this, does reverting > https://github.com/torvalds/linux/commit/ > 4dbd11796f3a8eb95647507befc41995458a4023 change anything? That commit is > correct so we wouldn't revert it in mainline, but it might give a hint that > there are multiple timing problems. > > Please give it a solid shake out (at least 10 cycles that you unplug power > adapter during suspend) before reporting back.
Hi Mario, I tested reverting commit 4dbd11796f3a on my HP Zbook Firefly G10 with a Ryzen 7 PRO 7840HS, as you suggested. Result: The problem was resolved. I performed the test cycle more than 10 times and the CPU frequency scaled normally after every single resume. Before the revert, the problem would consistently occur during the test cycle described below: 1) Laptop in use plugged on HP charger (any power profile) 2) Close lid of laptop 3) Unplug HP charger 4) Wait a few seconds 5) Plug in HP charger 6) Open Laptop - See that the CPU is stuck at 544 Hz. 7) Unplug and plug the charger makes the frequency normal again at a minimum of 1101 Hz but scaling normally. My system details: - Model: HP Zbook Firefly 14 inch G10 A (SBKPF,SBKPFV2) - CPU: AMD Ryzen 7 PRO 7840HS - BIOS: V82 Ver. 01.09.00 - OS: Fedora Silverblue 42 Thank you for your help. Márcio -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2088733 Title: low CPU frequency after wake up AMD Ryzen To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/2088733/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
