Bug 193081 - amdgpu-related kernel output delays booting/suspending/resuming
Summary: amdgpu-related kernel output delays booting/suspending/resuming
Status: NEW
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: 2017-01-21 16:53 UTC by Michael Long
Modified: 2017-02-18 13:20 UTC (History)
0 users

See Also:
Kernel Version: 4.9, 4.10-rc8
Subsystem:
Regression: Yes
Bisected commit-id:

Attachments
dmesg log (146.32 KB, application/octet-stream)
2017-01-21 16:53 UTC, Michael Long 		Details
Add an attachment (proposed patch, testcase, etc.)

Description Michael Long 2017-01-21 16:53:57 UTC 
Created attachment 252721 [details]
dmesg log

With kernel version 4.9 the boot process, s3 suspend and s3 resume is delayed by kernel messages like the following

[   17.322912] 
                failed to send pre message 148 ret is 0 
[   17.543482] 
                failed to send message 148 ret is 0 

for a very long time (see attachment for a full dmesg log). When the system is fully booted everything else seems to by fine.


I'm not sure if it is related at all, but I did a quick bisection: between 4.9-rc2 and 4.9-rc3, with the introduction of commit 3b496626ee8f07919256a4e99cddf42ecd4ba891 I had to supply a new firmware file (topaz_k_smc.bin) otherwise my screens remain black. After using the latest amdgpu-firmware files from linux-firmware.git I noticed the long boot delay and the messages.

My GPU-hardware is a Sapphire R9 380X:

05:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Amethyst XT [Radeon R9 M295X Mac Edition] (rev f1)
05:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Device aad8

Kernel 4.10-rcX seems also be affected.
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