No image during bootup with DVI panel
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Medium
|
Unassigned |
Bug Description
Binary package hint: linux-image-
I have a 19" Dell 1907FP 'UltraSharp' panel with both VGA+DVI inputs, and a Radeon X300 graphics card featuring one DVI and one VGA output.
I have cables from each output running to the monitor.
Very simply, if I have the panel in DVI mode, I see no Linux output on screen during boot between 'Uncompressing Linux...' and the gdm login screen. The panel only complains 'Unable to display this mode'. I cannot use any text console on ALT-Fx
If I switch to analogue input, all is well and I can see the boot progress, and use text console on ALT-Fx if necessary.
If I add vga=0x314 to the 'kernel' line in /boot/grub/menu.lst then all is well with both analogue + digital inputs, as well as a 'standard' [1] 800x600x16 bit display which scrolls quickly.
Ref: http://
What worries me is that having no output will confuse new users who think the system is broken. Worse still, if there IS a startup problem (xorg PCIe breakage, anybody?) , a new user connecting only through DVI will see no error messages, and have no facility to use a text console on ALT-Fx :(
This is not a new behaviour introduced with the new kernel - only the new kernel having reset my grub menu.lst to defaults has reminded me to log this as a bug :)
Cheers,
Gavin.
[1] By standard, I mean the minimum resolution that Windows XP will use for a desktop size.
Changed in linux-source-2.6.15: | |
importance: | Undecided → Medium |
status: | Incomplete → Confirmed |
Thank you for taking the time to report this bug and helping to make Ubuntu better. You reported this bug a while ago and there hasn't been any activity in it recently. We were wondering is this still an issue for you? Can you try with latest Ubuntu release? Thanks in advance.