Hi, I have a Windows guest under XL with Xen 4.2.0 and I''m trying to increase the resolution of the VNC console. I added: extra = "xen-fbfront.video=32,1920,1200" to the config file and Windows now offers me a choice of 800x600 or 1024x768 as available screen resolutions rather than just 800x600 so something has happened. My initial thought was that I wasn''t seeing the higher resolutions because I hadn''t allocated enough memory to the video so I tried 64,1920,1200 and 256,1920,1200 but I still don''t see anything better than 1024x768 available in Windows. What am I doing wrong please? Thanks, Paul.
Hi, you need the following 2 lines in your xen config: stdvga = 1 videoram = 16 (or more, if you like) With these settings i can set the resolution even to 2560*1600. Regards, Gabor Hudiczius On 13.03.11. 20:06, Paul Stimpson wrote:> Hi, > > I have a Windows guest under XL with Xen 4.2.0 and I''m trying to > increase the resolution of the VNC console. > > I added: > > extra = "xen-fbfront.video=32,1920,1200" > > to the config file and Windows now offers me a choice of 800x600 or > 1024x768 as available screen resolutions rather than just 800x600 so > something has happened. My initial thought was that I wasn''t seeing the > higher resolutions because I hadn''t allocated enough memory to the video > so I tried 64,1920,1200 and 256,1920,1200 but I still don''t see anything > better than 1024x768 available in Windows. > > What am I doing wrong please? > > Thanks, > Paul. > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xen.org > http://lists.xen.org/xen-users
On Mon, 2013-03-11 at 19:06 +0000, Paul Stimpson wrote:> Hi, > > I have a Windows guest under XL with Xen 4.2.0 and I''m trying to > increase the resolution of the VNC console. > > I added: > > extra = "xen-fbfront.video=32,1920,1200"Does Windows really have a xen-fbfront driver? I''ve not heard of such a thing. In any case "extra" adds something to the PV guest kernel command line, which isn''t going to go anywhere an HVM Windows guest kernel I''m afraid.> to the config file and Windows now offers me a choice of 800x600 or > 1024x768 as available screen resolutions rather than just 800x600 so > something has happened. My initial thought was that I wasn''t seeing the > higher resolutions because I hadn''t allocated enough memory to the video > so I tried 64,1920,1200 and 256,1920,1200 but I still don''t see anything > better than 1024x768 available in Windows. > > What am I doing wrong please?You need to be looking at the options relating to the emulated VGA device and video ram etc in xl.cfg(5). Ian.
Hi, On 12/03/13 12:11, Ian Campbell wrote:> You need to be looking at the options relating to the emulated VGA > device and video ram etc in xl.cfg(5). Ian.Thank you. You are correct that, in my inexperience, I had insufficiently studied and understood the documentation. I managed to get the VGA correctly working using Gabor''s method. I now have a different difficulty. I''m running HVM Windows Server 2008 R2. I turned the resolution up in steps and ti was fine until I hit 1600x1050. As soon as I selected that, the vnc session terminated (using gvncviewer) and I can''t re-establish it (it flashes up, reports the 1600x1050 resolution in the console I launched it from then says that the session has terminated and closes). I tried increasing the videoram line but this didn''t help. I then commented out both the stdvga and videoram lines and was able to access Windows in 1024x768 as before. I turned the screen rez down to 800x600, put the stdvga and videoram lines back and restarted. Windows (thinking it was being helpful) put the resolution back to 1600x1050 and it failed again. Is there any way I can stop the VNC console dying at high resolutions or stop Windows from restoring the old, non-working resolution when I put the virtual cirrus card back please? Thanks, Paul.