Public bug reported:
[Impact]
sysfs shows the linkspeed of 16 GT/s devices as "Unknown", so the user can't
actually see what speed it is capable of, or currently running at.
[Test Case]
For a PCIe device that supports 16 GT/s:
$ cat /sys/devices/pci0000:80/0000:80:08.0/max_link_speed
16 GT/s
[Fix]
Cherry-pick an upstream commit that supports in-kernel decoding of 16 GT/s link
speed
[Regression Risk]
Trivial fix that just adds an extra case in a switch statement w/ supporting
#defines.
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: dann frazier (dannf)
Status: In Progress
** Affects: linux (Ubuntu Bionic)
Importance: Undecided
Assignee: dann frazier (dannf)
Status: In Progress
** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Bionic)
Status: New => In Progress
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => dann frazier (dannf)
** Changed in: linux (Ubuntu Bionic)
Assignee: (unassigned) => dann frazier (dannf)
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https://bugs.launchpad.net/bugs/1773243
Title:
PCIe link speeds of 16 GT/s are shown as "Unknown speed"
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Bionic:
In Progress
Bug description:
[Impact]
sysfs shows the linkspeed of 16 GT/s devices as "Unknown", so the user can't
actually see what speed it is capable of, or currently running at.
[Test Case]
For a PCIe device that supports 16 GT/s:
$ cat /sys/devices/pci0000:80/0000:80:08.0/max_link_speed
16 GT/s
[Fix]
Cherry-pick an upstream commit that supports in-kernel decoding of 16 GT/s
link speed
[Regression Risk]
Trivial fix that just adds an extra case in a switch statement w/ supporting
#defines.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1773243/+subscriptions
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