vncserver geometry overriden

[mikealec]

Hi,

I am having an odd problem with vncserver since upgrading (preupgrade, which worked flawlessly, as far as I can tell) from FC16 to FC17. Let me start by saying that I am using Gnome in fallback mode. Under FC16, I could run:

vncserver :2 -geometry 1680x1050 -localhost -nolisten tcp

and then

vncviewer 127.0.0.1:2

which resulted in a 1680x1050 window with no scrollbars, and a functional Gnome desktop.

With FC17, however, when I run those same commands, I wind up with a desktop space that is 1920x1200 in size with scrollbars and the right and bottom edges of the vncviewer window despite seeing a /usr/bin/Xvnc process with the appropriately defined -geometry parameter. This seems somehow linked to the gnome-settings-daemon. If I chmod -x /usr/libexec/gnome-settings-daemon and then start the vncserver and vncviewer, it results in the desired 1680x1050 Gnome desktop.

The whole Gnome vs Xfce debate aside, when I switch to Xfce as a desktop and modify my ~/.vnc/xstartup file to run Xfce instead of Gnome, I get the desired 1680x1050 desktop.

What is gnome-settings-daemon doing that it is overriding the requested resolution, and is there a way to prevent it or make it do the right thing? Why is it arbitrarily picking 1920x1200 as the resolution it wishes to run at? The native X display on that host is 2560x1600, so it isn't getting it from there.

Brief excerpt from the ~/.vnc/host:2.log:

Xlib:  extension "DPMS" missing on display ":2".

(gnome-settings-daemon:4382): power-plugin-WARNING **: Failed set DPMS mode: Display is not DPMS capable
Xlib:  extension "DPMS" missing on display ":2".
=== xinerama setup Configuration ===
  Clone: false
  Output: Unknown attached to default
     status: on
     width: 1920
     height: 1200
     rate: 60
     primary: false
     position: 0 0
=== auto-configure - xinerama mode Configuration ===
  Clone: false
  Output: Unknown attached to default
     status: on
     width: 1920
     height: 1200
     rate: 60
     primary: false
     position: 0 0
=== Applying Configuration Configuration ===
  Clone: false
  Output: Unknown attached to default
     status: on
     width: 1920
     height: 1200
     rate: 60
     primary: true
     position: 0 0
Xlib:  extension "DPMS" missing on display ":2".
Xlib:  extension "DPMS" missing on display ":2".

(gnome-settings-daemon:4382): color-plugin-WARNING **: failed to get edid: unable to get EDID for output
Xlib:  extension "DPMS" missing on display ":2".

Thanks for any insight.

[reynolad]

I am seeing the same problem. Has anyone else see this or have a fix for it?

Thanks

[mikealec]

I've sort of given up on this for the time being as I have switched off of Gnome and onto Xfce which doesn't have this problem.

If you're still chasing it, this appears to be an issue with the following 3 components (I'm not sure which component to point at definitively):

1. gnome-settings-daemon
2. xrandr
3. Xvnc

So gnome-settings-daemon is invoking xrandr, which is returning the current size of 1680x1050, along with the maximum size of 1920x1200. gnome-settings-daemon is (incorrectly?) choosing 1920x1200 as the desktop sized based upon the maximum size returned by xrandr, rather than the current size of 1680x1050. I am not sure why xrandr returns a maximum of 1920x1200 when Xvnc has been invokved with "-geometry 1680x1050".

So is this the fault of gnome-settings-daemon for choosing the maximum resolution rather than the current resolution, or is this the fault of Xvnc for offering 1920x1200 when a smaller "-geometry" was defined? This problem started with FC17. Unfortunately, I don't have the time to set up another instance of FC16 to see what xrandr returns there for the Xvnc server.

xrandr: Failed to get size of gamma for output default
Screen 0: minimum 640 x 480, current 1680 x 1050, maximum 1920 x 1200
default connected 1680x1050+0+0 0mm x 0mm
   1920x1200      60.0  
   1920x1080      60.0  
   1600x1200      60.0  
   1680x1050      60.0* 
   1400x1050      60.0  
   1360x768       60.0  
   1280x1024      60.0  
   1280x960       60.0  
   1280x800       60.0  
   1280x720       60.0  
   1024x768       60.0  
   800x600        60.0  
   640x480        60.0

[cmonkey]

was having the same issue.. my vnc session was defaulting to 1920x1200 but i changed the resolution of the remote box to match my local resolution (1920x1080) using gnome's interface and everything appears to be working fine. its not a perfect solution but it's much better than running out of an autoscaled window or with too high of a resolution. I was previously using centos 5 with no problems. this started for me when moving to fedora 17.

[gossamer]

Originally Posted by cmonkey

was having the same issue.. my vnc session was defaulting to 1920x1200 but i changed the resolution of the remote box to match my local resolution (1920x1080) using gnome's interface and everything appears to be working fine. its not a perfect solution but it's much better than running out of an autoscaled window or with too high of a resolution. I was previously using centos 5 with no problems. this started for me when moving to fedora 17.

I'm having the same problem. Is it worth filing a bug report for fc17 at this point?

Also, perhaps I should post a separate message, but when I open chrome from the Applications menu, it opens on my desktop, not the vnc desktop. How do I control where the display is directed?

The $DISPLAY variable in an gnome-terminal is the vnc desktop, but it appears chrome doesn't get that from the environment?

Thanks,
Alex