==System Environment== -------------------------- Regression: not sure Non-working platforms: SKL ==kernel== -------------------------- drm-intel-nightly(2015_02_08)/b4442e ==Bug detailed description== ----------------------------- The Linux graphics driver for Skylake will support Display Concurrency - 1 embedded + 2 external up to max supported resolution all with blend, scale and rotate. 3 pipe doesn't work on SKL with latest (2015_02_08) -nightly branch. At the moment, two combinations eDP+DP and eDP+HDMI work well.
Failed machine is SKL-Y On Jan. 21 2015, we can see 3 pipe display can work together on the same machine using internal tree.
Could you provide the dmesg logs with drm.debug=14 with the failure?
Created attachment 113308 [details] debug with drm.debug=0xe
Add more information: Three monitors can be lighted up at the same time as below steps(reproduce :20%). 1. boot eDP + DP 2. plug in HDMI after os boot. Other failing combinations I've tried: 1. boot eDP + HDMI, plug in HDMI after os boot. 2. boot eDP, after os boot, plug HDMI then plug DP. 3. boot eDP, after os boot, plug DP then plug HDMI.
We just merged some SKL fixes that may affect all display-related tests. Please retest this bug against the latest drm-intel-nightly.
The issue still happens on latest drm-intel-nightly(2015_03_10)/c09a3b.
This issue doesn't exit on latest -nightly(drm-intel-nightly_f7def4_20150314).So close this bug.
Closing old verified.
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