https://bugs.freedesktop.org/show_bug.cgi?id=28857

Summary: radeon/M56GL: atombios stuck in loop while booting with KMS enabled Product: DRI Version: XOrg CVS Platform: x86-64 (AMD64) OS/Version: Linux (All) Status: NEW Severity: normal Priority: medium Component: DRM/Radeon AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: jeffm@suse.com

Created an attachment (id=36639) --> (https://bugs.freedesktop.org/attachment.cgi?id=36639) dmesg

While booting a freshly installed 11.3 RC1 system with the following graphics hardware, I end up with black screens and the displays are in low power mode.

ATI Technologies Inc M56GL [Mobility FireGL V5250]

If I boot with radeon.modeset=0, the problem clears up. The issue occurs with both the radeon driver and the radeonhd driver. It also occurs with the current 11.3 Factory kernel (2.6.34) as well as the 2.6.35-rc3 master kernel. Nothing in libdrm versions newer than openSUSE 11.3's 2.4.20 looks relevant.

I'll attach hwinfo, dmesg, and Xorg.0.log from the system while booted in KMS mode.