[Bug 96436] [drm:intel_dp_link_training_clock_recovery] *ERROR* too many voltage retries, give up / failure to train DP

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96436

--- Comment #1 from Martin Steigerwald <Martin at Lichtvoll.de> ---
External display at home office is Fujitsu P24T-7, 24 inch, Full HD. Laptop had
full HD internal display. Hmmm, one further difference between office setup,
where I didn´t see this and home office setup where I see this issue is: The
ThinkPad is docked at home with a Minidock Plus Series 3. I can plug the
interface to the DVI port of the ThinkPad itself for testing, if you want.

Also what worked as I had this now after resume from hibernation was to disable
the external screen in Plasma´s systemsettings and reenable it again. Since the
the external screen works okay. The DP connection is generally a bit flaky,
sometimes even on some movement of the table or so the display becomes black
for a short moment, but it usually recovers from that. Maybe a better cable
could help?


# xrandr
Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 8192 x 8192
LVDS1 connected primary 1920x1080+0+0 (normal left inverted right x axis y
axis) 344mm x 193mm
   1920x1080     60.00*+  59.93    50.00  
   1680x1050     59.95    59.88  
   1600x1024     60.17  
   1400x1050     59.98  
   1280x1024     60.02  
   1440x900      59.89  
   1280x960      60.00  
   1360x768      59.80    59.96  
   1152x864      60.00  
   1024x768      60.00  
   800x600       60.32    56.25  
   640x480       59.94  
VGA1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
HDMI3 disconnected (normal left inverted right x axis y axis)
DP2 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 531mm
x 299mm
   1920x1080     60.00*+  50.00    50.00    59.94  
   1920x1080i    60.00    50.00    59.94  
   1680x1050     59.95  
   1600x900      60.00  
   1280x1024     75.02    60.02  
   1440x900      59.89  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    60.00  
   800x600       75.00    60.32  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    60.00    59.94  
   720x400       70.08  
DP3 disconnected (normal left inverted right x axis y axis)


# phoronix-test-suite system-info

Phoronix Test Suite v5.2.1
System Information

Hardware:
Processor: Intel Core i5-2520M @ 3.20GHz (4 Cores), Motherboard: LENOVO
42433WG, Chipset: Intel 2nd Generation Core Family DRAM, Memory: 16384MB, Disk:
300GB INTEL SSDSA2CW30 + 480GB Crucial_CT480M50, Graphics: Intel HD 3000
(1300MHz), Audio: Conexant CX20590, Monitor: P24T-7 LED, Network: Intel 82579LM
Gigabit Connection + Intel Centrino Advanced-N 6205

Software:
OS: Debian unstable, Kernel: 4.6.0-tp520-btrfstrim+ (x86_64), Desktop: KDE
Frameworks 5, Display Server: X Server 1.18.3, Display Driver: intel 2.99.917,
OpenGL: 3.3 Mesa 11.2.2, Compiler: GCC 5.4.0 20160603, File-System: btrfs,
Screen Resolution: 3840x1080

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