[Bug 193081] New: amdgpu-related kernel output delays booting/suspending/resuming

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=193081

            Bug ID: 193081
           Summary: amdgpu-related kernel output delays
                    booting/suspending/resuming
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.9.x, 4.10-rcX
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri at kernel-bugs.osdl.org
          Reporter: harn-solo at gmx.de
        Regression: No

Created attachment 252721
  --> https://bugzilla.kernel.org/attachment.cgi?id=252721&action=edit
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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