Bug 42609

Summary:	KMS issues with radeon HD6670
Product:	Drivers	Reporter:	Angelo (angelo70)
Component:	Video(DRI - non Intel)	Assignee:	drivers_video-dri
Status:	RESOLVED OBSOLETE
Severity:	normal	CC:	alan, alexandre.f.demers, alexdeucher
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	-	Subsystem:
Regression:	No	Bisected commit-id:

Description Angelo 2012-01-19 17:45:56 UTC

Hi all,
not sure to post in the correct category, anyway

i am experiencing a KMS issue with a radeon HD6670

I set up the kernel config to enable KMS/radeon support.
When i boot, depending on the "vga= " modeset, using video=radeonfb and radeon.modeset=1, i get blank screen, or a completely black/white confused screen.
Sometime the kernel boot, other not. Don't matter if i set-up grub to start as  640x480 or 1280x1024.


With same kernel settings, radeon HD5450 was booting correctly, and was then able to use xorg with Gallium3d.

`--> cat /proc/version                                                                                                                                   ~
Linux version 3.1.6 (root@angel3) (gcc version 4.6.2 (Debian 4.6.2-9) ) #1 SMP Thu Jan 19 17:17:13 CET 2012

lspci
01:00.0 VGA compatible controller: ATI Technologies Inc Turks [Radeon HD 6670]

thanks
angelo

Comment 1 Alex Deucher 2012-05-12 03:49:02 UTC

Does it work ok if you remove all the vga= and radeonfb options?  Please attach your dmesg output and xorg log.

Comment 2 Alexandre Demers 2012-05-12 03:50:43 UTC

Could it be explained by this bug: https://bugs.freedesktop.org/show_bug.cgi?id=43655