[Sussex] Resolutions

[Steve Williams]

Ronan,

I had the same problem when I ran my Iiyama Pro Lite 1600x1200 monitor on DVI output from my graphics card. It seems that standard frame buffer resolutions max at 1024x768. I believe that Ubuntu uses the standard frame buffer to generate it's window manager displays for compatibility across a wide range of hardware. However, this appears to have been solved in kernel > 2.6.12.

If you can't run a custom kernel, try your monitor on the VGA connector of your graphics card (if it has one of course). You should then be able to set your fb resolution at boot using vga=0x348 (or whatever required).

You may recall I had a prang on a motorcross bike in June and injured my left shoulder. Well it turned out to be a Locked Posterior Dislocation, a really nasty injury that has had to be surgically reduced. So I'm feeling very sore post-op. I hope to be well enough to see everyone at the next SLUG Moot.

Steve Williams.

-----Original Message-----
    From: "Ronan Chilvers"<ronan at thelittledot.com>
    Sent: 12/08/05 10:56:08
    To: "LUG email list for the Sussex Counties"<sussex at mailman.lug.org.uk>
    Subject: [Sussex] Resolutions
    
    Hi folks
    
    Can anyone shed some light on an annoying X resolution problem?  I'm
    using a flat screen monitor at work (HP 1702 TFT) which is capable of
    1280x1024.  The machine used to have Mandrake 10 on it which happily
    drove the monitor at the right resolution.  However since installing
    Ubuntu, I can't get the resolution higher than 1024x768 without it
    using a virtual desktop space (ie: the desktop extends out beyond the
    monitor ), as if the highest resolution was 1024x768.  I've tried
    generating some Modelines for the full resolution, using the monitor
    specs from the HP site with no joy - same thing happens.  I know it
    will do the full resolution because it has quite happily in the past.
    
    Unfortunately I don't know the Mandrake 10 X server version which might
    have helped, but the current one is the standard Ubuntu Hoary xorg
    version 6.8.2. The graphics card is an on-board Intel 82865G PCI device
    using the native X driver's built resolutions / modes which does list
    1280x1024 as supported in Xorg.0.log.  However the log also contains
    the line
    
    (II) I810(0): Not using built-in mode "1280x1024" (width too large for
    virtual size)
    
    Any ideas anyone?  If you need to know anything else let me know. I can
    attach over xorg.conf files, etc as required.
    
    Cheers
    
    Ronan