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-   -   xfree86 logs - "Failed to set up write-combining range" (http://www.linuxquestions.org/questions/linux-newbie-8/xfree86-logs-failed-to-set-up-write-combining-range-176458/)

jbryanj 04-30-2004 04:57 PM

xfree86 logs - "Failed to set up write-combining range"
 
I have been trying to track this down for the last couple of days. When running startx, the logs show the following:

(II) VESA(0): Splitting WC range: base: 0xe8000000, size: 0xd0000
(II) VESA(0): Splitting WC range: base: 0xe8010000, size: 0xc0000
(II) VESA(0): Splitting WC range: base: 0xe8020000, size: 0xb0000
(II) VESA(0): Splitting WC range: base: 0xe8030000, size: 0xa0000
(II) VESA(0): Splitting WC range: base: 0xe8040000, size: 0x90000
(II) VESA(0): Splitting WC range: base: 0xe8050000, size: 0x80000
(II) VESA(0): Splitting WC range: base: 0xe8060000, size: 0x70000
(II) VESA(0): Splitting WC range: base: 0xe8070000, size: 0x60000
(II) VESA(0): Splitting WC range: base: 0xe8080000, size: 0x50000
(II) VESA(0): Splitting WC range: base: 0xe8090000, size: 0x40000
(II) VESA(0): Splitting WC range: base: 0xe80a0000, size: 0x30000
(II) VESA(0): Splitting WC range: base: 0xe80b0000, size: 0x20000
(==) VESA(0): Write-combining range (0xe80c0000,0x10000)
(==) VESA(0): Write-combining range (0xe80b0000,0x20000)
(==) VESA(0): Write-combining range (0xe80a0000,0x30000)
(==) VESA(0): Write-combining range (0xe8090000,0x40000)
(==) VESA(0): Write-combining range (0xe8080000,0x50000)
(==) VESA(0): Write-combining range (0xe8070000,0x60000)
(WW) VESA(0): Failed to set up write-combining range (0xe8060000,0x70000)
(WW) VESA(0): Failed to set up write-combining range (0xe8050000,0x80000)
(WW) VESA(0): Failed to set up write-combining range (0xe8040000,0x90000)
(WW) VESA(0): Failed to set up write-combining range (0xe8030000,0xa0000)
(WW) VESA(0): Failed to set up write-combining range (0xe8020000,0xb0000)
(WW) VESA(0): Failed to set up write-combining range (0xe8010000,0xc0000)
(WW) VESA(0): Failed to set up write-combining range (0xe8000000,0xd0000)

I have found lots of information saying that this might have something to do with MTRR, with the drivers for certain graphics cards, etc.. Unfortunately, what I have not yet found is a solution. The graphics "card" in this case is the on-board Intel 865G chipset.

1. What actually causes the system to try to segment the graphics memory?
2. How do I stop it?

Thanks in advance


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