framebuffer shows blank screen

Mr.QNo · n00b Joined: 21 Mar 2005 Posts: 74

Kernel 2.6.25-gentoo-r9, ATI Rage 128 Graphic card.

The machine runs as a homeserver, normally without a monitor. After the last update, the reboot hang up, so i had to install a monitor after at least three months. Now i could see the BIOS, the GRUB menu - and then a blank screen, while all services are running. I'm rather clueless at that point.

title=Gentoo Linux 2.6.25-gentoo-r9
# Partition in der das Kernel-Image (oder das Betriebssystem) vorhanden ist
root (hd0,0)
kernel /boot/kernel-2.6.25-gentoo-r9 root=/dev/hda2 vga=0x318 video=aty128fb:1024x768-32@85

from dmesg:
aty128fb: Found Intel x86 BIOS ROM Image
aty128fb: Rage128 BIOS located
aty128fb: Rage128 RF AGP [chip rev 0x2] 16M 128-bit SDR SGRAM (1:1)
fb0: ATY Rage128 frame buffer device on Rage128 RF AGP
aty128fb: Rage128 MTRR set to ON

Where else have i to look?

Edit:
server ~ # fbset -i

mode "1024x768-85"
# D: 98.902 MHz, H: 70.243 kHz, V: 85.454 Hz
geometry 1024 768 1024 768 32
timings 10111 192 32 34 14 160 6
rgba 8/16,8/8,8/0,8/24
endmode

Frame buffer device information:
Name : ATY Rage128
Address : 0xe0000000
Size : 16777216
Type : PACKED PIXELS
Visual : PSEUDOCOLOR
XPanStep : 8
YPanStep : 1
YWrapStep : 0
LineLength : 0
MMIO Address: 0xefefc000
MMIO Size : 8192
Accelerator : Unknown (32)

Monitor is a Fujitsu-Siemens 21P3

jongeek · Posted: Mon Feb 23, 2009 9:49 pm Post subject: reboot

What was updated before your last good reboot ?

Try removing the vga=0x318 portion of your kernel boot line. It is not at all necessary since you have video=aty128fb:1024x768-32@85.

If that doesn't help try removing the video=<blah> part as well, and see what happens when you let the kernel auto-detect everything.

I'm assuming you haven't changed any of your kernel boot parameters since the last good boot. Right ?

Do you have an info button of some sort on your monitor that will show you the horizontal sync and vertical refresh rate, and/or current resolution via an OSD of some sort ?

laumann · Posted: Mon Feb 23, 2009 9:56 pm Post subject:

You could also try setting vga=ask (without the video option), and see what options you are given - that's if you don't mind not using the video kernel parameter

pappy_mcfae · Posted: Tue Feb 24, 2009 8:27 am Post subject:

Use the VESA frame buffer. That always works. If you do, turn off any other frame buffer drivers.

Blessed be!
Pappy
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Mr.QNo · n00b Joined: 21 Mar 2005 Posts: 74