Public bug reported:
Ubuntu 6.10, x86
I installed Ubuntu 6.10 to PC with LCD monitor (HP LP1965) that supports
native resolution 1280x1024, 60Hz.
My graphic card is ATI 9200SE,
# lspci | grep VGA
01:00.0 VGA compatible controller: ATI Technologies Inc RV280 [Radeon 9200 SE]
(rev 01)
During graphical Ubuntu boot, LCD cannot handle video signal, frequency
is probably too high (than 60Hz).
I had the same problem with Ubuntu 6.06.1 but that was installed with
analog monitor so I met problem after monitor change; Ubuntu had no
change to detect LCD monitor and configure Ubuntu in proper way.
I think that Ubuntu should detect that LCD monitor is installed during
install and configure kernel for LCD display. Or to use lower monitor
frequency during Linux boot by default.
It is possible to fix the problem by adding a parameter for kernel (vga=791),
like this line in /boot/grub/menu.lst:
# defoptions=quiet splash vga=791
It has to be done manually and "update-grub" updates kernel lines in menu.lst;
Ubuntu cannot do this during install, it is a bug from my point of view.
** Affects: Ubuntu
Importance: Undecided
Status: Unconfirmed
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Ubuntu grafical boot uses too high horizontal frequency (LCD display problem)
https://launchpad.net/bugs/81206
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