Bug#797999: more debug info

[Eric Valette]

On 10/12/2016 11:44 AM, Eric Valette wrote:

On 10/12/2016 10:57 AM, Eric Valette wrote:

On 10/11/2016 04:22 PM, Eric Valette wrote:

On 10/11/2016 04:10 PM, Dominique Dumont wrote:



Could you try that on your side ?

I can do the test but I never open the lid when docked so this will not
be my use case and this means also modifying my xorg.conf.


Once session is initialized with kdm, in system settings-> display and
monitor, I have DP4 on at 1920x1200 (as reported by xrandr even when
failing) and DP3 off.


I tried to let the lid open with my actual xorg.conf and rebooted, both
screen go black. I can still switch to laptop lid in text mode using
ctrl-alt-f1. I loged to my accound, killed sddm service and did a
startx, and the kde session shows up correctly on the external monitor
and laptop screen goes black.



I was in a meeting so undocked my laptop and by curiosity completely 
removed the xorg.conf and tried sddm. Even in this simpliest config it 
fails and the screen goes black after displaying the Nvidia logo 
(usually I use the No Logo option but as xorg.conf was empty). I got 
sddm errors in /var/run/sddm.log. It says the greeter can't open the 
display.


So probably the problem is not the docking and the external monitor. 
Compared to other working setup with same software stack (legacy 340 
nvidia driver), the only thing I can see that differs is the fact that 
the laptop lid is wired via DisplayPort versus HDMI.


xrandr on this config when started via kdm
Screen 0: minimum 8 x 8, current 1440 x 900, maximum 8192 x 8192
VGA-0 disconnected (normal left inverted right x axis y axis)
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 connected primary 1440x900+0+0 (normal left inverted right x axis y 
axis) 304mm x 190mm

   1440x900  59.96*+  39.96
DP-4 disconnected (normal left inverted right x axis y axis)



--eric

Bug#797999: more debug info

[Eric Valette]

On 10/12/2016 10:57 AM, Eric Valette wrote:

On 10/11/2016 04:22 PM, Eric Valette wrote:

On 10/11/2016 04:10 PM, Dominique Dumont wrote:



Could you try that on your side ?

I can do the test but I never open the lid when docked so this will not
be my use case and this means also modifying my xorg.conf.


Once session is initialized with kdm, in system settings-> display and
monitor, I have DP4 on at 1920x1200 (as reported by xrandr even when
failing) and DP3 off.


I tried to let the lid open with my actual xorg.conf and rebooted, both 
screen go black. I can still switch to laptop lid in text mode using 
ctrl-alt-f1. I loged to my accound, killed sddm service and did a 
startx, and the kde session shows up correctly on the external monitor 
and laptop screen goes black.


Could you try to use nvidia-settings to disable your laptop screen, via 
the X Server Display Configuration menu and use save X configuration 
file (in /tmp/xorg.conf) back up you actual /etx/X11/xorg.conf if you 
have one and then replace your working dual screen conf by the 
/tmp/xorg.conf


NB : actually the xorg.conf file generated is not perfect it misses the 
config for the second monitor, and still use the laptop screen 
identifier in the Screen section while adding the external monitor config



dpkg -s nvidia-settings-legacy-340xx
Package: nvidia-settings-legacy-340xx
Status: install ok installed
Priority: optional
Section: contrib/x11
Installed-Size: 1861
Maintainer: Debian NVIDIA Maintainers 


Architecture: amd64
Version: 340.93-1
Depends: pkg-config, nvidia-legacy-340xx-alternative, libc6 (>= 2.14), 
libgdk-pixbuf2.0-0 (>= 2.22.0), libglib2.0-0 (>= 2.12.0), libgtk2.0-0 
(>= 2.8.0), libjansson4 (>= 2.3), libpango-1.0-0 (>= 1.14.0), libx11-6 
(>= 2:1.4.99.1), libxext6, libxxf86vm1

Pre-Depends: nvidia-installer-cleanup
Recommends: libgl1-nvidia-legacy-340xx-glx
Breaks: nvidia-alternative (<< 313.30-2), 
nvidia-alternative-legacy-173xx (<< 173.14.37), 
nvidia-alternative-legacy-96xx (<< 96.43.23-4)
Description: tool for configuring the NVIDIA graphics driver (340xx 
legacy version)

 The nvidia-settings utility is a tool for configuring the NVIDIA
 Linux graphics driver.  It operates by communicating with the NVIDIA
 X driver, querying and updating state as appropriate.  This
 communication is done with the NV-CONTROL X extension.
 .
 Values such as brightness and gamma, XVideo attributes, temperature,
 and OpenGL settings can be queried and configured via nvidia-settings.
Homepage: ftp://download.nvidia.com/XFree86/nvidia-settings/