Red Hat Bugzilla – Bug 140848
[PATCH] wrong mode timings in vga16fb.c require "nofb" installation
Last modified: 2007-11-30 17:07:05 EST
Description of problem:
The mode timings of the default 640x480-60 mode in
drivers/video/vga16fb.c do not work with some LCD displays
because they deviate slightly from the standard. In particular, the
screen height is wrong (529 vs. 525 pixels)
Version-Release number of selected component (if applicable):
2.4.21-20.EL and all others
E.g. Installing RH on a system with an LCD screen that can't hanlde
slightly wrong VGA timings, without the "nofb" installation option.
Steps to Reproduce:
Screen will become black (or garbled, depending on display device)
after loader starts
Screen remains readable
I'll attach a patch. Problem was already discussed on the
linux-fbdev-devel mailing list.
Link to linux-fbdev-devel thread:
Created attachment 107461 [details]
patch that fixes the problem
Created attachment 107462 [details]
patch for kernel 2.6
Closing out as wontfix for RHEL3.