Bug 8369

Summary: Endian Problem in xf86int10.h "V_BIOS 0x3e0 out of range" int10
Product: xorg Reporter: Myles <watsonm>
Component: Lib/otherAssignee: Xorg Project Team <xorg-team>
Status: RESOLVED FIXED QA Contact: Xorg Project Team <xorg-team>
Severity: minor    
Priority: high    
Version: 7.0.0   
Hardware: x86 (IA32)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Bug Depends on:    
Bug Blocks: 16399    
Attachments:
Description Flags
X.org logfile none

Description Myles 2006-09-20 11:21:30 UTC 
I'm using LinuxBIOS and when I boot into Linux 2.6.17 and start X, it can't find
my video bios, so it checks the default location (V_BIOS 0xC0000) and gives me
the error: 
(EE) ATI(0): V_BIOS address 0x3e0 out of range. I changed the constant to 0xc000
and it worked and found the bios.  I think it is an endian problem and that the
constant should be run through an Endian converter before being used.
Comment 1 Peter Missel 2007-02-09 12:42:38 UTC 
Created attachment 8647 [details]
X.org logfile

Same here, Linux, AMD64 architecture.
Comment 2 Peter Missel 2007-02-12 14:04:09 UTC 
News ... when forcing the correct location by adding:

  Option "BiosLocation" "786432"

int10 uses 0xC0000 (=786432 decimal) and happily proceeds, but then X hangs hard right after loading the DDC and VBE extensions - no crash, but 100% CPU load, nothing happening, no reaction to normal kill, only kill -9 helps. (Same setup as in previous logfile)

Paired with #9920, I'm tempted to believe that the int10 infrastructure is seriously b0rked on Linux/AMD64.
Comment 3 Daniel Stone 2007-02-27 01:33:37 UTC 
Sorry about the phenomenal bug spam, guys.  Adding xorg-team@ to the QA contact so bugs don't get lost in future.
Comment 4 Daniel Stone 2009-08-31 18:12:50 UTC 
hmm, seems to work fine on amd64 (which is little-endian) these days.  closing speculatively since there's been a hell of a lot work done on int10/x86emu since then: please reopen if this is still a problem for you.
Comment 5 Peter Hutterer 2009-09-17 17:32:29 UTC 
(In reply to comment #4)
> hmm, seems to work fine on amd64 (which is little-endian) these days.  closing
> speculatively since there's been a hell of a lot work done on int10/x86emu
> since then: please reopen if this is still a problem for you.

Closing the bug per above comment.

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