Bug 1247240
Summary: | Thinkpad t440s freezes in Ultra Dock with external monitors | ||||||
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Product: | [Fedora] Fedora | Reporter: | Tom "spot" Callaway <tcallawa> | ||||
Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> | ||||
Status: | CLOSED CURRENTRELEASE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
Severity: | high | Docs Contact: | |||||
Priority: | unspecified | ||||||
Version: | 23 | CC: | adam, airlied, andrew, emcnabb, eric, extras-qa, gansalmon, hakan.hagenrud, itamar, jcarpenter, jeckersb, jforbes, jonathan, jpopelka, jshubin, kernel-maint, kristian.hermann.karl, madhu.chinakonda, mailings, matt, mchehab, rafael, sdodson, sghosh, tcallawa, wpoteat | ||||
Target Milestone: | --- | ||||||
Target Release: | --- | ||||||
Hardware: | x86_64 | ||||||
OS: | Linux | ||||||
Whiteboard: | |||||||
Fixed In Version: | Doc Type: | Bug Fix | |||||
Doc Text: | Story Points: | --- | |||||
Clone Of: | 1036974 | Environment: | |||||
Last Closed: | 2015-10-20 12:58:26 UTC | Type: | Bug | ||||
Regression: | --- | Mount Type: | --- | ||||
Documentation: | --- | CRM: | |||||
Verified Versions: | Category: | --- | |||||
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
Cloudforms Team: | --- | Target Upstream Version: | |||||
Embargoed: | |||||||
Bug Depends On: | 1036974 | ||||||
Bug Blocks: | |||||||
Attachments: |
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Description
Tom "spot" Callaway
2015-07-27 15:43:23 UTC
I'm wondering if a patch got lost somewhere in the 4.2 cycle. Created attachment 1078383 [details]
dmesg log with drm.debug=14 on kernel 4.2.1-300.fc23
This continues to be broken with current kernels. I put the Thinkpad in the dock, booted up with drm.debug=14. Plymouth (the graphical boot screen in Fedora) loads up properly on both monitors, but when it drops to the gdm login screen, it only shows up on the laptop panel (the external monitor is black). GNOME slowly loads, but when I bring up the display control panel, it seems to freeze but eventually shows me that it can see the external display, but no matter what I do, it cannot output to it.
As a reminder, when I undock the laptop and connect the external monitor to the VGA port, it works as expected.
I had to gz the dmesg log file due to its size, there is a LOT of noise in there.
I believe this has been fixed with kernel 4.2.2-300. Would you mind testing and letting me know? Confirmed as fixed. Sorry it took so long to test this, but I have been away from my desk (where the dock lives). |