Bug 83531 - radeon 6650m cannot boot without radeon.runpm=0
Summary: radeon 6650m cannot boot without radeon.runpm=0
Status: RESOLVED INVALID
Alias: None
Product: Drivers
Classification: Unclassified
Component: Video(DRI - non Intel) (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: drivers_video-dri
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2014-08-30 16:25 UTC by Kevin
Modified: 2016-10-21 00:55 UTC (History)
2 users (show)

See Also:
Kernel Version: 3.13-3.15.10
Subsystem:
Regression: No
Bisected commit-id:

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Description Kevin 2014-08-30 16:25:32 UTC 
my laptop is a lenovo z575 with an amd a6-3420 apu and a 6650m for hybrid graphics. I am running fedora 20 with the latest kernel of 3.15.10

ever since I updated to kernel 3.13 sometime ago when hybrid DPM was enabled my laptop will not boot without the above kernel parameter.

i have the plymouth boot screen disabled so it shows text based boot. the moment the boot text "fedora 20 hisenbug" shows up, between 3 and 5 seconds later the cursor will stop blinking and the system will be frozen. sometimes more boot text shows up after sometimes not.

any help to get dynamic power management working.
Comment 1 Alex Deucher 2014-09-08 05:08:17 UTC 
Please attach your dmesg output.
Comment 2 Kevin 2016-10-21 00:55:14 UTC 
cleaning. (2 years sorry)

assumed bad hardware, works with bios disabled discrete card.
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