[Bug 109730] On resume: atombios stuck in loop for more than 5secs

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109730

            Bug ID: 109730
           Summary: On resume: atombios stuck in loop for more than 5secs
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: dnt at gmx.com

Created attachment 143433
  --> https://bugs.freedesktop.org/attachment.cgi?id=143433&action=edit
dmesg

On resume after suspend I get the following error on my Dell Latitude E6540
with an Intel and a Radeon graphics controller running Arch Linux:
[30893.254641] [drm:atom_op_jump [radeon]] *ERROR* atombios stuck in loop for
more than 5secs aborting
[30893.254655] [drm:atom_execute_table_locked [radeon]] *ERROR* atombios stuck
executing D170 (len 62, WS 0, PS 0) @ 0xD18C
[30893.254668] [drm:atom_execute_table_locked [radeon]] *ERROR* atombios stuck
executing B8D2 (len 236, WS 4, PS 0) @ 0xB99F
[30893.254679] [drm:atom_execute_table_locked [radeon]] *ERROR* atombios stuck
executing B830 (len 74, WS 0, PS 8) @ 0xB838
[30893.255547] [drm:si_dpm_enable [radeon]] *ERROR* si_init_smc_table failed
[30893.255561] [drm:radeon_pm_resume [radeon]] *ERROR* radeon: dpm resume
failed

In the attached output of dmesg, you'll see the error between 6170.599551 and
6291.483893 as well as after 30893.254641. The errors with the lower time
happened after resume on a docking station with 2 DVI displays, the errors
starting at 30893.254641 happened after resume back on the previous docking
station with 1 DVI display. While I experience no issue in the first case, in
the latter case Xorg crashes. Xorg keeps crashing on every start and the above
error is printed until reboot.

I've now tried different kernel versions and the error starts with Linux 4.17.
When looking for differences between 4.16 and 4.17 I found this commit:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-4.17.y&id=07f4f97d7b4bf325d9f558c5b58230387e4e57e0
Could this be the reason for the issue?

Let me know if you need any further information.

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