Re: [gentoo-user] nvidia-settings over ssh sees my local GPU?
On Thu, Jun 23, 2011 at 11:31:29AM -0700, Mark Knecht wrote: 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. this seems pretty old... defaults on most distros these days are that X server does not listen on tcp/ip (ip-address:0) only on a local unix sockets (:0), see below for more 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!) :-) To connect to an Xserver, you need to know its address, which is something like machine_or_ip:NUMNER for tcp/ip connection or just :NUMBER for (local) unix socket connection. When you do a ssh -X , ssh creates a tunnel from the remote computer to your local Xserver (:0 at your side), and creates a new address, usually localhost:10 (or 11, 12, which on is free) if i'm behing a laptop named 'tabletka' and there is also a desktop named 'yoyo' (its the same as my username... on both), you could do: yoyo@tabletka ~ $ DISPLAY=:0 xterm which runs xterm here (tabletka), displays it here yoyo@tabletka ~ $ DISPLAY=yoyo:0 xterm runs xterm here, displays it on yoyo however as i said, most distributions don't allow Xservers to listen on tcp/ip and only allow it to listen on local sockets... you can however use ssh to tunnel X traffic, so you could do: yoyo@tabletka ~ $ echo $DISPLAY :0.0 yoyo@tabletka ~ $ ssh -X yoyo yoyo@yoyo:~$ echo
Re: [gentoo-user] nvidia-settings over ssh sees my local GPU?
On 06/23/2011 09:21 AM, Neil Bothwick wrote: 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. You may also want to throw in -no-xshm for giggles. Probably won't work, but it would be worth a try
Re: [gentoo-user] nvidia-settings over ssh sees my local GPU?
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. -- Neil Bothwick Of all the people I've met you're certainly one of them signature.asc Description: PGP signature
Re: [gentoo-user] nvidia-settings over ssh sees my local GPU?
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
Re: [gentoo-user] nvidia-settings over ssh sees my local GPU?
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
