Bug 192271

Summary: kernel 4.9 hangs during shutdown or reboot
Product: Drivers Reporter: upcwtenq
Component: Video(DRI - non Intel)Assignee: drivers_video-dri
Status: NEW ---    
Severity: high CC: alexdeucher, fthhixof, r-schmidt, rherbert, rui.zhang
Priority: P1    
Hardware: x86-64   
OS: Linux   
Kernel Version: 4.9.2 Subsystem:
Regression: Yes Bisected commit-id:
Attachments: possible fix

Description upcwtenq 2017-01-10 19:34:56 UTC 
After upgrading to kernel 4.9 my machine hangs during shutdown/reboot.
the shutdown/reboot procedure starts and finish with systemd unmount all partitions.
Monitor poweroff but the gpu led (motherboard) is ON.

add "radeon.dpm=0" in kernel line solved problem.

vga: HD5770 Vapor-X (Evergreen)
Comment 1 Zhang Rui 2017-01-16 03:19:59 UTC 
reassign to the graphics experts.
Comment 2 Alex Deucher 2017-01-25 17:04:48 UTC 
Created attachment 253121 [details]
possible fix

Does the attached patch help?
Comment 3 upcwtenq 2017-01-26 09:08:56 UTC 
ok fixed, thanks!
Comment 4 r-schmidt 2017-01-28 14:53:47 UTC 
I can confirm that the patch works. Applied to kernel 4.9.6.
graphics card: Cypress XT [Radeon HD 5870]

Thanks.
Comment 5 Richard Herbert 2017-02-03 00:31:51 UTC 
Glad the patch made it into the latest kernel 4.9 (4.9.7). Same HD5770 as upcwteng.

Thanks.
Comment 6 fthhixof 2017-09-08 11:17:30 UTC 
Hi

Same problem after upgrading to kernel 4.12.10-1-ARCH (ArchLinux 64Bit)

Radeon 5770 Evergreen