Red Hat Bugzilla – Bug 1283176
Some external displays don't wake up
Last modified: 2016-07-19 15:59:22 EDT
Description of problem:
Placing Lenovo Thinkpad 450s into the Dock results with only some of the external displays waking up. This can be either one of the two, or on rare occasions, none of the two.
Steps to Reproduce:
1. Place a Thinkpad with running Fedora into a dock, with connected external displays.
Some of the displays wake up sometimes.
All of the displays wake up always.
This issue can be resolved by closing and reopening the lid on the laptop after it's been placed inside the Dock. This usually causes the remaining sleeping external display to wake up.
I know other people who have different hacks around it, like forcing a rerender of the screens using a x11 tool (not sure which one), or just pulling out and plugging in the sleeping display.
Fedora 22 changed to end-of-life (EOL) status on 2016-07-19. Fedora 22 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.
If you can reproduce this bug against a currently maintained version of
Fedora please feel free to reopen this bug against that version. If you
are unable to reopen this bug, please file a new report against the
current release. If you experience problems, please add a comment to this
Thank you for reporting this bug and we are sorry it could not be fixed.