[Bug 95298] Can't "connect" to external display attached to docking station via DP on laptop with Intel/AMD dual
https://bugs.freedesktop.org/show_bug.cgi?id=95298
Bug ID: 95298 Summary: Can't "connect" to external display attached to docking station via DP on laptop with Intel/AMD dual Product: DRI Version: XOrg git Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: DRM/Radeon Assignee: dri-devel@lists.freedesktop.org Reporter: debian@onerussian.com
Created attachment 123520 --> https://bugs.freedesktop.org/attachment.cgi?id=123520&action=edit entire dmesg from the boot #1
I have HP zbook 14 and using Debian testing/unstable. External monitor is connected to docking station serving two DP connections. To make those visible to xrandr I do
xrandr --setprovideroffloadsink 1 0 xrandr --setprovideroutputsource 1 0
where 0 corresponds to Intel, 1 to Radeon/OLAND (name changed when upgraded). Setup was working with stock debian packages (kernel was 4.4.2-3) for awhile but there was an issue that display didn't refresh correctly and often I had blank patches and had to go to gnome overview and back to re-render. So I have decided to upgrade to a current state of testing + some unstable. Currently have xserver-xorg-core 2:1.18.3-1 xserver-xorg-video-ati 1:7.7.0-1 and kernel 4.5.1-1 . Unfortunately I can't "turn on" the external display connected to the docking station -- screen blinks and comes back to display on the laptop, xrandr reports xrandr: Configure crtc 4 failed and agd5f on IRC looking at http://www.onerussian.com/tmp/dmesg-20160506-1.txt (attached to this report as well) summarized as "link training failed on the display"
https://bugs.freedesktop.org/show_bug.cgi?id=95298
--- Comment #1 from Alex Deucher alexdeucher@gmail.com --- Does appending radeon.runpm=0 on the kernel command line in grub help?
https://bugs.freedesktop.org/show_bug.cgi?id=95298
--- Comment #2 from Alex Deucher alexdeucher@gmail.com --- Did the monitor light up previously on a different kernel? If so which one? Can you bisect?
https://bugs.freedesktop.org/show_bug.cgi?id=95298
--- Comment #3 from Yaroslav Halchenko debian@onerussian.com --- prev kernel: 4.4.2-3 -- yes it connected/light up no problem. I had 1 more issue though (may be relevant). When I come to work, and drop laptop into docking station, if then external monitor immediately lights up in 'clone' mode, I had to turn it off in xrandr/Displays, since otherwise whenever I run my stock "enable external monitor, disable laptop" xrandr line the whole display would go black without any signs of life from the laptop and I had to reboot. I have forgot if/where I had report on that issue. If I turned it off first in Gnome Display and then run xrandr to enable external in Primary mode -- it worked fine.
runpm: I will try whenever free time emerges (later today/or monday)
bisection: if only nothing left for poor me. This is the main workhorse machine for me
https://bugs.freedesktop.org/show_bug.cgi?id=95298
otrebor otrebor@swissonline.ch changed:
What |Removed |Added ---------------------------------------------------------------------------- See Also| |https://bugs.freedesktop.or | |g/show_bug.cgi?id=110629
https://bugs.freedesktop.org/show_bug.cgi?id=95298
Martin Peres martin.peres@free.fr changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |MOVED
--- Comment #4 from Martin Peres martin.peres@free.fr --- -- GitLab Migration Automatic Message --
This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.
You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/718.
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