This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1970798
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Changed in: linux (Ubuntu Focal)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1970798
Title:
32 GT/s PCI link speeds reporting "Unknown speed" in sysfs
Status in linux package in Ubuntu:
Incomplete
Status in linux source package in Focal:
Incomplete
Bug description:
Our NCCL software uses the sysfs to populate the attached topo.xml
file. Several of the entries should report "32 GT/s", but they're
saying "Unknown speed" instead. For instance:
<pci busid="0000:0c:00.0" class="0x020700" vendor="0x15b3"
device="0x1021" subsystem_vendor="0x15b3" subsystem_device="0x0082"
link_speed="Unknown speed" link_width="16">
The 5.4 kernel is missing the following commit:
https://lore.kernel.org/all/1581937984-40353-2-git-send-email-
[email protected]/
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