| 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 [details] 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"
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