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Location: Sunnyvale, California, United States

Monday, December 06, 2004

Fodera Core 3/ Windows XP dual boot starting from a single windows partition(Part 2)

Cotinuing last night's post, I list the problems encountered in booting FC3 as below.

1. Averatec 3200 screen becomes black and never comes back during booting. This problem has been reported happening on some other brand laptops as well. The trick is to use 'Ctrl+Alt+F1' to bring it back.

2. Past 1, Averatec may automatically try to shutdown, printing some message about md/md0. The reason for this is there's a bug in FC3 acpi, the power management. It can be bypassed in booting. Reboot computer, and choose 'e' to edit grub in the booting menu, adding 'acpi=off', sth like "kernel /boot/vmlinuz-2.6.9-1.667 ro acpi=off". To eventually fix this problem, after FC3 boots up, can change to use apm or install newer driver for acpi.

3. Now seems everything is ok, till the X startup stage. X just doesn't startup, still this is because of the vedio adapter driver. To fix it, similar as 2, add ' 3' in the boot option, "kernel /boot/vmlinuz-2.6.9-1.667 ro acpi=off 3". It will boot into console mode, then login as root and fix it. Open file /ect/X11/xorg.conf, search for line 'Driver "via"', and change it to "Drive "vesa"', to use the generic driver, since the included via driver doesnt work properly.

4. X should boot till now. But there's another problem, it starts X in 800X600 resolution, and you can't change it to 1024x768, either by editing /etc/X11/xorg.conf or using 'start->system setting->display' in FC3. The problem is monitor. FC3 can't recognize Averatec's monitor and put a generic CRT with low HorizSync and VertRefresh there. Linux would read that parameters to determine whether it's safe to use certain resolution. Change it to 'Generic LCD' and increase HorizSync/VertRefresh. Normally LCD has fixed values as 60Hz. The modified xorg.conf should read like below, the bold line means being modified.

Section "Monitor"
******* (other parameters)
ModelName "Generic LCD"
HorizSync 31.5-60.5
VertRefresh 28-70
EndSection

Section "Device"
******* (other parameters)
Driver "vesa"
EndSection

Section "Screen"
******* (other parameters)
SubSection "Display"
Viewport 0 0
Depth 16
Modes "1024x768" "800x600" "640x320"
EndSubSection
******* (other parameters)
EndSection

FC3 should be booting charmingly now.

16 Comments:

Anonymous Anonymous said...

I am experiencing difficuties in installing fedora now. Many of them are the same as you described. Very helpful, thank you.

1:20 AM  
Anonymous Anonymous said...

I had exactly the same problems with FC3 and X server that I couldn't get past with an Averatec 3225.

Thank you very much for posting your xorg.conf exerpts. I am now up-and running!

Thanks again!

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it helped a lot, and as i can only guess has helped many others, thanks

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