Hi Alex! There are further results [1] for Suravee's patch on Ryzen 2500U (BubuXP) and 2400G (myself). Both show a slight difference between cold boot (retry 5 x 20 msecs = success) and warm boot (retry 6 x 20 msecs = failure).
It would be worth (even slightly) increasing the number of retries should you backport this commit <6778ff5b21bd8e78> to hirsute or breezy. Regards [1] https://bugzilla.kernel.org/show_bug.cgi?id=201753 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1917203 Title: AMD-Vi: Unable to read/write to IOMMU perf counter To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1917203/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
