On Thu, Jun 23, 2011 at 10:39 AM, YoYo Siska <y...@gl.ksp.sk> wrote: > On Thu, Jun 23, 2011 at 05:21:07PM +0100, Neil Bothwick wrote: >> On Thu, 23 Jun 2011 08:54:01 -0700, Mark Knecht wrote: >> >> > My question is about running nvidia-settings. I'm finding that if I >> > shell into his machine using >> > >> > ssh -X -Y -C IP-address >> > >> > and run nvidia-settings I get it displayed here, as it should be. The >> > problem is it is seeing my GTX 465 and not his 8400GS. >> >> Looking at the man page, it appears you need to use the -ctrl-display >> parameter or the $DISPLAY env var. The man page mentions that >> nvidia-settings queries the X server, which is running locally. It looks >> like this setting may force it to use another. > > > as neil wrote, it is > nvidia-settings -c :0 > > nvidia-settings connects to the remote xserver to communicate > with the graphics card (through a special nvidia xtenstion to the x > protocol), so you need to be able to access the remote xserver, if you > are logged in as the user running the xserver, you should be ok > > yoy
Yeah, I've been tripping over doing this right since Neil pointed me toward the -c command. I think the problem is that I don't have the permissions set correctly to allow this to work right. The owner of the remote machine is logged in and possibly using X. I'm not sure about that but I'm not 'running the X server' in any meaningful way. I'm just remotely trying to access his GPU with nvidia-settings but display the GUI here. The problem seems to be getting the right number of his server or else permissions. This page is one of the better ones I've found about running nvidia-settings remotely, specifically section 6 which gives this example: http://www.makelinux.com/man/1/A/alt-nvidia-173-settings (issued from bartok.nvidia.com) xhost +stravinsky.nvidia.com (issued from schoenberg.nvidia.com) xhost +stravinsky.nvidia.com nvidia-settings --display=bartok.nvidia.com:0 --ctrl-display=schoenberg.nvidia.com:0 which "allows all X clients run on stravinsky.nvidia.com to connect and display on bartok.nvidia.com's X server and configure schoenberg.nvidia.com's X server." It seems this program allows you to run it from machine1, display it on machine2 which controlling machine3? So, locally I ran mark@c2stable ~ $ xhost access control enabled, only authorized clients can connect mark@c2stable ~ $ xhost +DWP-Linux DWP-Linux being added to access control list mark@c2stable ~ $ xhost access control enabled, only authorized clients can connect INET:DWP-Linux mark@c2stable ~ $ which I think allows the remote machine access here in my server. I then log in which creates the .Xauthority file: mark@c2stable ~ $ ssh -XYC DWP-Linux Password: Last login: Thu Jun 23 14:11:33 EDT 2011 from c-67-161-57-1.hsd1.ca.comcast.net on pts/3 /usr/bin/xauth: file /home/mark/.Xauthority does not exist mark@DWP-Linux ~ $ ls -al .Xauthority -rw------- 1 mark mark 55 Jun 23 14:21 .Xauthority mark@DWP-Linux ~ $ cat .Xauthority DWP-Linux11MIT-MAGIC-COOKIE-1��:��T'6�@R��mark@DWP-Linux ~ $ mark@DWP-Linux ~ $ On that machine I see this $DISPLAY: mark@DWP-Linux ~ $ echo $DISPLAY localhost:11.0 mark@DWP-Linux ~ $ so I run mark@DWP-Linux ~ $ nvidia-settings -c :11 which sees my GPU, not his, presumably because I said to control my system with -c :11. However if I try something like mark@DWP-Linux ~ $ nvidia-settings -c :0 I get a bunch of stuff ending with ERROR: Unable to assign attribute XVideoSyncToDisplay specified on line 62 of configuration file '/home/mark/.nvidia-settings-rc' (no Display connection). No protocol specified ERROR: Cannot open display ':0'. mark@DWP-Linux ~ $ I'm a bit lost at this point. (OBVIOUSLY!) :-) Thanks for any guidance, Mark
