Help answer threads with 0 replies.
Go Back > Forums > Linux Forums > Linux - Newbie
User Name
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!


  Search this Thread
Old 02-17-2009, 10:07 AM   #1
Registered: Nov 2004
Location: NH/CT
Distribution: Slackware 10 to 14
Posts: 45

Rep: Reputation: 0
Intel i810 video mode to use at boot prompt for high res video in Xwin

[see note at end, I've solved this problem....]

I'm not exactly a newbie, but this question fits the bill.
I find I really don't understand what the video mode one
enters at the boot prompt is doing when lilo.conf contains
"vga=ask". I have a couple different system with different video
controllers. All are currently running the 2.4.31 kernel, but
I think is is a fairly generic issue.

Some of these systems allow me to enter vesa video modes (at least
I think they are, 791 is one that works on two systems). However if
I list the valid modes at the prompt after the kernel loads it says
the only available modes are 0 to 0xb even though it accepts and honnors
the 3 digit number above. Whats going on here?

I tried doing research and think I read that these are bios video modes
supported by the controller chip. I also read some of the i8xx series
have problems with linux incorrectly reading the video modes available from the chip. Maybe this is my problem. On the system that does have
an i810 chipset it rejects any video mode not in the range 0 to 0xb, yet
my other two systems are happy with much larger modes. dmesg on this system shows the agpgart is seeing the frame buffer, but this happens long after the prompt for video mode.

Am I off base here? Is there a better way to control my video mode when
I start Xwindows.


------------------- update the next day ------------------
I wish I could retract the post above, it now seems foolish :-(.

A little more research allowed me to solve most of my own questions.
Clearly I should be setting X Window resolution in my /etc/X11/xorg.conf I found a good list of VESA modes at
0x100 through 0x11B would be better choices if I really wanted a graphics mode (which I don't).

My 2.4.31 kernels do accept these modes and dutifully switch into graphics mode. This isn't so useful as one can't read the boot prompts in graphics mode but one can type blind and control the system. 'Shutdown' and 'startx' both work properly after login.

Last edited by will_kranz; 02-20-2009 at 07:44 AM. Reason: solved my own problem


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Where to find Intel i810 video drivers enine Slackware 4 02-27-2008 01:43 PM
VIA Epia SP8000 & video corruption on high-res Pearlseattle Linux - Hardware 0 01-15-2008 02:27 PM
i810 & i915 blank screen Intel Corporation 82845G onboard video davimint Slackware 30 06-28-2007 03:58 AM
No S-Video Signal on Intel i810 eman45008 Ubuntu 1 05-31-2006 07:13 AM
Xwin Video Help cronikus Linux - General 0 11-16-2001 01:29 PM > Forums > Linux Forums > Linux - Newbie

All times are GMT -5. The time now is 06:38 PM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration