This bug is awaiting verification that the linux-oem-5.14/5.14.0-1006.6 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-focal -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem-5.14 in Ubuntu. https://bugs.launchpad.net/bugs/1945361 Title: [Yellow Carp] USB4 interdomain communication problems Status in amd: New Status in linux-oem-5.14 package in Ubuntu: Invalid Status in linux-oem-5.14 source package in Focal: Fix Committed Bug description: [Impact] Yellow carp w/ SW CM bi-directional interdomain communication may have some problems that the response packets are lost sometimes within the stipulated time. [Fix] Enable the retry by increasing retry count from 1 to 4. The patch is in linux-next (tag next-20211007) and can be found @ https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/drivers/thunderbolt/ctl.c?id=641cdbea7635be3a177dbdf81356ccb16f3769e3 [Test] This is requested and tested by AMD. [Where problems could occur] Low risk. This only affects small number of AMD systems that would excess the time. Systems without problems won't be affected. ===== Original Description ==== AMD internal team has found that for Yellow carp w/ SW CM bi- directional interdomain communication may have some problems. It's been aligned upstream to increase number of retries to account for these issues. https://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt.git/commit/?h=next&id=641cdbea7635be3a177dbdf81356ccb16f3769e3 Can Canonical team please include this in future 5.14-OEM? To manage notifications about this bug go to: https://bugs.launchpad.net/amd/+bug/1945361/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
