Bug 23887

Summary:	[kms,radeon] display goes out of sync when radeon kernel module loads
Product:	xorg	Reporter:	kowalski marcin <yoshi314>
Component:	Driver/Radeon	Assignee:	xf86-video-ati maintainers <xorg-driver-ati>
Status:	RESOLVED INVALID	QA Contact:	Xorg Project Team <xorg-team>
Severity:	normal
Priority:	medium
Version:	unspecified
Hardware:	x86-64 (AMD64)
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description kowalski marcin 2009-09-12 13:03:26 UTC

as in description - when radeon module is loaded, display goes into power saving/out of sync mode. 

the system is operating properly otherwise (i can login, run commands, issue a reboot, etc). i did not try starting X when the system was in that state.

fragment of log from kernel with merged drm-next repository ( http://git.zen-sources.org/?p=zen.git;a=summary at commit 8f99495de3571ca40430a7977d616709b8816a66 ) 

http://pastebin.ca/1563248

dmesg log of 2.6.31 (gentoo-sources-2.6.31 - mainline with few non-gfx related patches) 
http://pastebin.ca/1563494

my graphics card is 
05:00.0 VGA compatible controller: ATI Technologies Inc RV515 PRO [Radeon X1300/X1550 Series]
05:00.1 Display controller: ATI Technologies Inc RV515 PRO [Radeon X1300/X1550 Series] (Secondary)

first dvi port is connected to benq fp72g+d lcd monitor.

Comment 1 Alex Deucher 2009-09-13 15:37:35 UTC

Make sure fbcon is loaded before loading radeon otherwise you will not get a console on the drm provided framebuffer.

Comment 2 kowalski marcin 2009-09-14 00:46:47 UTC

that is correct. when i loaded fbcon after drm and before radeon modeset=1 it all worked correctly, and display came up.

the problem is - my previous setup had fbcon compiled into the kernel, while drm+radeon were modules. it seems this combination does not work. 

i'll try building kernel with drm, fbcon and radeon built in, and see what happens.

Comment 3 Dave Airlie 2009-09-14 02:38:20 UTC

should work we do that in Fedora kernel and it seems fine.

Comment 4 kowalski marcin 2009-09-14 07:25:37 UTC

ok, it seems to work. i'll close this one as invalid.

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