Re: bug #13249 - problem with intelfb on i845gm

On Mon, 18 May 2009 12:48:18 +0200 (CEST)
Werner LEMBERG [off-list ref] wrote:

quoted

Could you send to me (or attach to the bugzilla report) output of
the dmesg command on the system with the bug?

Done.

What I see here is that for 2.6.27 you use the VESA framebuffer
while you do not use it for the 2.6.28

Compare your configs:
2.6.27 : CONFIG_FB_VESA=y
2.6.28: # CONFIG_FB_VESA is not set

and messages from the 2.6.27:
<6>vesafb: framebuffer at 0xd0000000, mapped to 0xf8880000, using 5120k, total 7872k
<6>vesafb: mode is 1280x1024x16, linelength=2560, pages=2
<6>vesafb: scrolling: redraw
<6>vesafb: Truecolor: size=0:5:6:5, shift=0:11:5:0
<4>Console: switching to colour frame buffer device 160x64
<6>fb0: VESA VGA frame buffer device

and nothing like that from the 2.6.28.

My advice is try using the Intel framebuffer (change it to Y not 'M' like module). It should
be faster than VESA on your hardware. Unselect VESA. 

Please report if it works for you after the config change.

Kind regards,
Krzysztof


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