I'm running Gnome-shell 3.10 on Ubuntu 14.04 When I connect the monitor to the HDMI port, video is displayed, but mouse movement, and opening windows, causes some weird clipping effect. Connecting the same monitor to the VGA port works perfectly.
$ lspci | grep -i vga
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
$ lspci | grep -i 3d
01:00.0 3D controller: NVIDIA Corporation GF119M [Quadro NVS 4200M] (rev a1)
$ uname -a
Linux l03u 3.13.0-39-generic #66-Ubuntu SMP Tue Oct 28 13:31:23 UTC 2014 i686 i686 i686 GNU/Linux
xrandr
output:
$ xrandr
Screen 0: minimum 320 x 200, current 3286 x 1200, maximum 32767 x 32767
LVDS1 connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 309mm x 174mm
1366x768 60.1*+
1360x768 59.8 60.0
1024x768 60.0
800x600 60.3 56.2
640x480 59.9
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)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
HDMI-1-2 connected 1920x1200+1366+0 518mm x 324mm
1920x1200 60.0*+
1600x1200 60.0
1680x1050 59.9
1280x1024 60.0
1280x960 60.0
1024x768 60.0
800x600 60.3
640x480 60.0
720x400 70.1
DP-1-2 disconnected
DVI-D-1-1 disconnected
1024x768 (0xcf) 65.0MHz
h: width 1024 start 1048 end 1184 total 1344 skew 0 clock 48.4KHz
v: height 768 start 771 end 777 total 806 clock 60.0Hz
800x600 (0xd0) 40.0MHz
h: width 800 start 840 end 968 total 1056 skew 0 clock 37.9KHz
v: height 600 start 601 end 605 total 628 clock 60.3Hz
I tried installing the nvidia-331
drivers, but with them Gnome fails to load after a reboot, so I had to remove them.
I couldn't take a proper screenshot because the display fixes itself when print screen
is pressed. But here's a lame attempt to capture the behavior:
Update1 :
I followed Fabby's answer below and installed nvidia-346 from the xorg-edgers ppa.
With the nvidia drivers gdm
fails to load. The syslog contains the following errors:
Nov 18 22:31:03 gdm-simple-slave[3182]: GLib-GObject: g_object_ref: assertion 'object->ref_count > 0' failed
Nov 18 22:31:03 gdm-launch-environment][3195]: GLib-GObject: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
Nov 18 22:31:03 gnome-session[3249]: Gdk-WARNING: gnome-session: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.#012
Nov 18 22:31:03 gdm-simple-slave[3182]: GLib: Source ID 4 was not found when attempting to remove it
Nov 18 22:31:03 gdm-simple-slave[3182]: GLib-GObject: g_object_unref: assertion 'object->ref_count > 0' failed
Nov 18 22:31:03 acpid: client 3187[0:0] has disconnected
Update2:
Tested the same with Unity and XFCE and the same issue reappears. Gnome appears to be unrelated.