Bug 60623

Summary:	White Screen on boot with radeon.dpm=1
Product:	Drivers	Reporter:	John (electrobs)
Component:	Video(DRI - non Intel)	Assignee:	drivers_video-dri
Status:	NEW ---
Severity:	blocking	CC:	alexdeucher, fepaw95099, szg00000
Priority:	P1
Hardware:	x86-64
OS:	Linux
Kernel Version:	3.11.0-999-generic	Subsystem:
Regression:	No	Bisected commit-id:

Description John 2013-07-25 14:57:53 UTC

Using the latest ubuntu built kernel from http://kernel.ubuntu.com/~kernel-ppa/mainline/, and enabling the boot option of radeon.dpm=1 . Results in a black screen after grub that eventually turns white gradually. Removing the option allows the laptop to function perfectly with the AMD 3650 video card.

Hardware:
-Lenovo T500 with AMD 3650 and a Intel 4500MHD switchable graphics off.
-more info at http://support.lenovo.com/en_US/detail.page?LegacyDocID=MIGR-71785

Software:
-clean install of Kubuntu 13.04 with beta ppa enabled for KDE 4.11 rc2
-xorg-edgers ppa enabled

Comment 1 Alex Deucher 2013-07-25 15:32:50 UTC

Duplicate of:
https://bugs.freedesktop.org/show_bug.cgi?id=66963

Comment 2 anonymous 2019-03-05 01:09:26 UTC

https://bugzilla.kernel.org/show_bug.cgi?id=202739 might be a fix.