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Old 06-10-2005, 03:23 AM   #1
Cybers19
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Location: Germany - Zöbingen
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Question Kernel 2.6.11.11 and FrameBuffer...


Hi everybody!

yesterday i compiled the kernel 2.6.11.11 from kernel.org.
Everything is working well except the framebuffer support.
If i boot with the new 2.6.11.11 kernel i get only a black screen. Then the computer boots up (i do not see anything on the console) and then kdm starts up. After that i can work normaly in X. But if i change back into console i only see a black screen.
With the Kernel 2.6.8-2.386 from debian it works fine.

kernel parameters which i have tested:
Code:
vga=0x31a
vga=0x31b
vga=0x317
video=vesafb;1280x1024-16@60
video=radeonfb;1280x1024-16@60 'driver was on .config enabled
video=radeon;1280x1024-16@60 'driver was on .config enabled
My .config
Code:
# 
# Graphics support 
# 
CONFIG_FB=y 
# CONFIG_FB_MODE_HELPERS is not set 
# CONFIG_FB_TILEBLITTING is not set 
# CONFIG_FB_CIRRUS is not set 
# CONFIG_FB_PM2 is not set 
# CONFIG_FB_CYBER2000 is not set 
# CONFIG_FB_ASILIANT is not set 
# CONFIG_FB_IMSTT is not set 
CONFIG_FB_VGA16=m 
CONFIG_FB_VESA=y 
CONFIG_VIDEO_SELECT=y 
# CONFIG_FB_HGA is not set 
# CONFIG_FB_RIVA is not set 
# CONFIG_FB_I810 is not set 
# CONFIG_FB_INTEL is not set 
# CONFIG_FB_MATROX is not set 
# CONFIG_FB_RADEON_OLD is not set 
# CONFIG_FB_RADEON is not set 
# CONFIG_FB_ATY128 is not set 
# CONFIG_FB_ATY is not set 
# CONFIG_FB_SAVAGE is not set 
# CONFIG_FB_SIS is not set 
# CONFIG_FB_NEOMAGIC is not set 
# CONFIG_FB_KYRO is not set 
# CONFIG_FB_3DFX is not set 
# CONFIG_FB_VOODOO1 is not set 
# CONFIG_FB_TRIDENT is not set 
CONFIG_FB_VIRTUAL=m 

# 
# Console display driver support 
# 
CONFIG_VGA_CONSOLE=y 
CONFIG_MDA_CONSOLE=m 
CONFIG_DUMMY_CONSOLE=y 
CONFIG_FRAMEBUFFER_CONSOLE=m 
# CONFIG_FONTS is not set 
CONFIG_FONT_8x8=y 
CONFIG_FONT_8x16=y 

# 
# Logo configuration 
# 
CONFIG_LOGO=y 
CONFIG_LOGO_LINUX_MONO=y 
CONFIG_LOGO_LINUX_VGA16=y 
CONFIG_LOGO_LINUX_CLUT224=y 
# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
This is my syslog:
Code:
Jun  9 22:51:41 spacy01 kernel: vesafb: framebuffer at 0xd0000000, mapped to 0xf8880000, using
5120k, total 16384k 
Jun  9 22:51:41 spacy01 kernel: vesafb: mode is 1280x1024x16, linelength=2560, pages=5 
Jun  9 22:51:41 spacy01 kernel: vesafb: protected mode interface info at c000:ab90 
Jun  9 22:51:41 spacy01 kernel: vesafb: scrolling: redraw 
Jun  9 22:51:41 spacy01 kernel: vesafb: Truecolor: size=0:5:6:5, shift=0:11:5:0
The next thing is: Why can't i compile vesa fb support as moule

So, if anyone have suggestions, let me know, please.

My Hardware: AMD64 3400+; ATI Radeon X800 Pro; 1024MB RAM


Cybers19
 
Old 06-10-2005, 04:55 AM   #2
dabang
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Registered: May 2005
Location: Germany
Distribution: sidux, Debian, Ubuntu
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I remember having the same problem some time ago when compiling a kernel for my slackware 9.1 box. I don't remember exactly what I did to fix it, but I'm quite sure, that I didn't compile anything mentioned in those three sections as module. So maybe you can try again with all compiled into your kernel?

I think I found some kind of tutorial, when I encountered that problem. If I find it again, I'll post the link.
 
Old 06-10-2005, 05:22 AM   #3
perfect_circle
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Registered: Oct 2004
Location: Athens, Greece
Distribution: Slackware, arch
Posts: 1,783

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Re: Kernel 2.6.11.11 and FrameBuffer...

Quote:
Originally posted by Cybers19
Hi everybody!

The next thing is: Why can't i compile vesa fb support as module

So, if anyone have suggestions, let me know, please.

My Hardware: AMD64 3400+; ATI Radeon X800 Pro; 1024MB RAM


Cybers19
I'm an old-fashioned guy, so I prefer vga=normal and this will definitely work in your case.

The vesa fb is supposed to run when the kernel is loaded and before the root filesystem is mounted. So you need to have it inside the kernel. Maybe you can include it in initrd if you compile it as a module, but I don't know.
 
Old 06-10-2005, 05:08 PM   #4
m_yates
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Registered: Aug 2003
Location: Upstate
Distribution: Debian, Mint, Mythbuntu
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Rep: Reputation: 54
This is a nagging problem that lots of people run into. I found that you can SOMETIMES get it to work by turning off all framebuffer drivers excet vesafb, but it doesn't always work. As the above poster did, I have given up and now also use vga=normal. It is ugly, but at least the screen isn't black. I would be interested in hearing how you fix it if you find out how. Sorry I can't be of more help
 
Old 01-25-2006, 04:41 AM   #5
m2acis
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Registered: Jan 2006
Location: Latvia, Riga
Distribution: Slackware, Ubuntu
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Blank console with vesfb

Had the same problem - blank screen un kernel 2.6.15 with vesafb compiled in. X loaded normaly. I tried passing many video modes to vga=ask, but none worked. And then I finaly resolved problem by simply loading fbcon module from xterm. After loading fbcon screen was drawn . To make things esyer I yust recompiled my kernel with fbcon compiled in (not as module) and wuoalaa.
 
  


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