*** This bug is a duplicate of bug 2035307 ***
https://bugs.launchpad.net/bugs/2035307
** This bug has been marked a duplicate of private bug 2035307
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Packages, which is subscribed to linux-oem-6.1 in Ubuntu.
https://bugs.launchpad.net/bugs/2037254
Title:
Restore proper ASPM L1ss setting on system resume
Status in linux-oem-6.1 package in Ubuntu:
Invalid
Status in linux-oem-6.5 package in Ubuntu:
Invalid
Status in linux-oem-6.1 source package in Jammy:
Confirmed
Status in linux-oem-6.5 source package in Jammy:
Confirmed
Bug description:
[Impact]
Realtek cardreader drops from PCIe bus after system resume, because L1ss
became different.
[Fix]
Restore ASPM L1ss setting so the ASPM assumption made by driver can be
kept.
[Test]
The cardreader in question keeps working after S3 because the L1ss
remains the same after resume.
[Where problems could occur]
Drivers may already made "workaround" to circumvent the current L1ss
situation. So restoring the L1ss might break some drivers. That means we
should test this in OEM kernel for some cycles before let it land to
generic kernel.
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