[Bug 208893] New: Navi (RX 5700 XT) system appears to hang with more than one display connected

[Bug 208893] New: Navi (RX 5700 XT) system appears to hang with more than one display connected

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208893

            Bug ID: 208893
           Summary: Navi (RX 5700 XT) system appears to hang with more
                    than one display connected
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.8.1, 5.7.15
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: gordon@gordonite.tech
        Regression: No

I am using Fedora 32, and have tried the latest fixes with 5.8.1 mainline, and
stable Fedora 32.

If i connect a single monitor to my system it works fine.

However, when I connect a freesync monitor (144Hz and another 24 inch monitor,
the system during boot shows much larger startup times, and also general
hanging, the screen flickers too but ONLY when the second monitor is
connected.)

When I boot the system, even the 'booting' is delayed considerably by
comparison when the second display port monitor is connected.

It seems to be one of two problems:
- with multiple displays the card is not behaving properly
- the difference in refresh rates is causing a problem / conflict.

I do not know for certain where the problem lies, but even booting is slowing
down so I do not believe this is purely a Mesa issue.

Using wayland or xorg seems to make little difference the problem is on both,
and even on terminal sessions (slowing down terminal output to the display and
general unresponsiveness)

however as stated above, rebooting with a single display resolves these
problems.

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[Bug 208893] Navi (RX 5700 XT) system appears to hang with more than one display connected

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208893

--- Comment #1 from Gordon (gordon@gordonite.tech) ---
Created attachment 290867
  --> https://bugzilla.kernel.org/attachment.cgi?id=290867&action=edit
added logfile for system has some AMD GPU errors in it, this is when both
displays are connected.

added logfile for system has some AMD GPU errors in it, this is when both
displays are connected.

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[Bug 208893] Navi (RX 5700 XT) system appears to hang with more than one display connected

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208893

--- Comment #2 from Gordon (gordon@gordonite.tech) ---
Created attachment 290869
  --> https://bugzilla.kernel.org/attachment.cgi?id=290869&action=edit
added logfile for when single display is connected - notice no ERROR from
AMDGPU anymore!

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[Bug 208893] Navi (RX 5700 XT) system appears to hang with more than one display connected

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208893

--- Comment #3 from Gordon (gordon@gordonite.tech) ---
The Diff from the log file - clearly showing the problem:

[   51.925494] amdgpu: Msg issuing pre-check failed and SMU may be not in the
right state!
[   54.442825] amdgpu: Msg issuing pre-check failed and SMU may be not in the
right state!
[   56.962050] amdgpu: Msg issuing pre-check failed and SMU may be not in the
right state!
[   59.475881] amdgpu: Msg issuing pre-check failed and SMU may be not in the
right state!
[   61.752557] amdgpu: Msg issuing pre-check failed and SMU may be not in the
right state!
[   64.274971] amdgpu: Msg issuing pre-check failed and SMU may be not in the
right state!
[   66.797358] amdgpu: Msg issuing pre-check failed and SMU may be not in the
right state!
[   69.318513] amdgpu: Msg issuing pre-check failed and SMU may be not in the
right state!
[   70.395781] rfkill: input handler disabled
[   72.035479] amdgpu: Msg issuing pre-check failed and SMU may be not in the
right state!
[   74.554161] amdgpu: Msg issuing pre-check failed and SMU may be not in the
right state!
[   77.073499] amdgpu: Msg issuing pre-check failed and SMU may be not in the
right state!
[   78.755571] snd_hda_intel 0000:0c:00.1: refused to change power state from
D0 to D3hot
[   79.593997] amdgpu: Msg issuing pre-check failed and SMU may be not in the
right state!
[   81.941379] amdgpu: Msg issuing pre-check failed and SMU may be not in the
right state!
[   84.460616] amdgpu: Msg issuing pre-check failed and SMU may be not in the
right state!
[   86.980582] amdgpu: Msg issuing pre-check failed and SMU may be not in the
right state!
[   89.498263] amdgpu: Msg issuing pre-check failed and SMU may be not in the
right state!
[   91.742602] rfkill: input handler enabled

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[Bug 208893] Navi (RX 5700 XT) system appears to hang with more than one display connected

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208893

--- Comment #4 from Gordon (gordon@gordonite.tech) ---
Found a fix for the issue. 

My card is a PowerColor Red Devil 5600 XT.


diff --git a/drivers/gpu/drm/amd/powerplay/smu_cmn.c
b/drivers/gpu/drm/amd/powerplay/smu_cmn.c
index 5c23c44c33bd..62917c447ddb 100644
--- a/drivers/gpu/drm/amd/powerplay/smu_cmn.c
+++ b/drivers/gpu/drm/amd/powerplay/smu_cmn.c
@@ -87,7 +87,7 @@ static void smu_cmn_read_arg(struct smu_context *smu,
 static int smu_cmn_wait_for_response(struct smu_context *smu)
 {
        struct amdgpu_device *adev = smu->adev;
-       uint32_t cur_value, i, timeout = adev->usec_timeout * 10;
+       uint32_t cur_value, i, timeout = adev->usec_timeout * 20;

        for (i = 0; i < timeout; i++) {
                cur_value = RREG32_SOC15_NO_KIQ(MP1, 0, mmMP1_SMN_C2PMSG_90);
(END)

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[Bug 208893] Navi (RX 5700 XT) system appears to hang with more than one display connected

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208893

--- Comment #5 from Gordon (gordon@gordonite.tech) ---
The problem: the GPU card / seems to make a difference here, some seem to
require a bigger delay? and some just work.

Would be nice to know why.

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[Bug 208893] Navi (RX 5700 XT) system appears to hang with more than one display connected

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208893

--- Comment #6 from Gordon (gordon@gordonite.tech) ---
Created attachment 290871
  --> https://bugzilla.kernel.org/attachment.cgi?id=290871&action=edit
this is the log from after my patch is applied

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[Bug 208893] Navi (RX 5700 XT) system appears to hang with more than one display connected

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208893

--- Comment #7 from Gordon (gordon@gordonite.tech) ---
[   18.764922] snd_hda_intel 0000:0c:00.1: refused to change power state from
D3hot to D0
[   18.869351] snd_hda_intel 0000:0c:00.1: CORB reset timeout#2, CORBRP = 65535
[   19.090949] snd_hda_codec_hdmi hdaudioC0D0: Unable to sync register
0x2f0d00. -5
[   19.310079] amdgpu: failed send message: SetHardMinByFreq (28)       param:
0x0002036b response 0xffffffc2

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[Bug 208893] Navi (RX 5700 XT) system appears to hang with more than one display connected

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https://bugzilla.kernel.org/show_bug.cgi?id=208893

--- Comment #8 from Gordon (gordon@gordonite.tech) ---
not getting any symptoms of the problem now.

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[Bug 208893] Navi (RX 5700 XT) system appears to hang with more than one display connected

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https://bugzilla.kernel.org/show_bug.cgi?id=208893

--- Comment #9 from Gordon (gordon@gordonite.tech) ---
nvm rebooted and the problem came back.

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[Bug 208893] Navi (RX 5700 XT) system appears to hang with more than one display connected

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=208893

Alex Deucher (alexdeucher@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alexdeucher@gmail.com

--- Comment #10 from Alex Deucher (alexdeucher@gmail.com) ---
Do things work correctly if you attach the second monitor after the system is
up and running?

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[Bug 208893] Navi (RX 5700 XT) system appears to hang with more than one display connected

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https://bugzilla.kernel.org/show_bug.cgi?id=208893

--- Comment #11 from Gordon (gordon@gordonite.tech) ---
(In reply to Alex Deucher from comment #10)
> Do things work correctly if you attach the second monitor after the system
> is up and running?

Yep they do indeed.

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[Bug 208893] Navi (RX 5700 XT) system appears to hang with more than one display connected

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https://bugzilla.kernel.org/show_bug.cgi?id=208893

--- Comment #12 from Gordon (gordon@gordonite.tech) ---
I'm not certain but:
- uint32_t cur_value, i, timeout = adev->usec_timeout * 10;

if adev_usec_timeout is the microseconds timeout, then most likely the * 10 is
wrong, as the below for loop uses microseconds too, so possibly they meant to
add there too. Each iteration is 1 micro second, and the below code makes it 10
times that for the timeout, i think this explains the 'hanging' but not why it
inconsistently breaks.

Another few thoughts were:
- Perhaps there is a period of messages on 'init' / startup where we are
sending more.
- I can only think the flaky behaviour is a memory issue, or a problem where
the GPU is not being reset fully on boot. As it makes zero sense it works
'sometimes'.
- When the message / error occours the 'timeout' is 10 times the value, thus
blocking messages for the other startup events.
- The display port being connected / or being interfaced with on init might be
preventing the normal startup messages to be sent to the GPU.

These GPUs have a problem in general with loss of display output, so if there
is an electronics issue, maybe we don't have the 'hack' to make it work.

IDK for sure, I'm new to kernel devel. I mainly work on Godot.

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[Bug 208893] Navi (RX 5700 XT) system appears to hang with more than one display connected

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https://bugzilla.kernel.org/show_bug.cgi?id=208893

--- Comment #13 from Gordon (gordon@gordonite.tech) ---
To fix this problem after boot on the RX 5700 XT Red Devil I had to run this as
root, can we make a patch for that to be the default?

- echo "high" > /sys/class/drm/card0/device/power_dpm_force_performance_level

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[Bug 208893] Navi (RX 5700 XT) system appears to hang with more than one display connected

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https://bugzilla.kernel.org/show_bug.cgi?id=208893

--- Comment #14 from Gordon (gordon@gordonite.tech) ---
more info:
echo 'auto' has the flickering problem
echo 'low' seems to work fine
echo 'high' seems to work fine

transitioning between 'high' and 'low' makes the problem appear / light
flickering.

auto can always reproduce the issue.

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[Bug 208893] Navi (RX 5700 XT) system appears to hang with more than one display connected

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https://bugzilla.kernel.org/show_bug.cgi?id=208893

--- Comment #15 from Alex Deucher (alexdeucher@gmail.com) ---
Does setting amdgpu.dpm=0 on the kernel command line in grub fix the issue?  If
so, remove that and try setting amdgpu.ppfeaturemask=0xffffbffd on the kernel
command line in grub.  Does that help?

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[Bug 208893] Navi (RX 5700 XT) system appears to hang with more than one display connected

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https://bugzilla.kernel.org/show_bug.cgi?id=208893

--- Comment #16 from Gordon (gordon@gordonite.tech) ---
Those settings both work to solve the problems. 

Running on: 5.8.7-200.fc32.x86_64 with those options only.

Performance is almost what I'd expect now too. I can consistently across
distros apply this and it seems to work fine.

Tested out:
- GTA: San Andreas
- ZeroK (with avg 40+ fps in games, no stuttering visible)

Can we possibly get these to be the defaults or do they possibly have some
negative performance problems?

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[Bug 208893] Navi (RX 5700 XT) system appears to hang with more than one display connected

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https://bugzilla.kernel.org/show_bug.cgi?id=208893

--- Comment #17 from Gordon (gordon@gordonite.tech) ---
Update:
- discord is crashing due to OpenGL problems
- Random video output in the bottom right corner of screen bug in driver level
code most likely
- no info about it in dmesg
- benchmarks show card is very slow compared to where it should be using a web
benchmark

"Your results compared to other users:
You score better than 24% of all users so far!
You score better than 26% of the people who use the same browser and OS!"

Going to test with these options removed.

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[Bug 208893] Navi (RX 5700 XT) system appears to hang with more than one display connected

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https://bugzilla.kernel.org/show_bug.cgi?id=208893

--- Comment #18 from Gordon (gordon@gordonite.tech) ---
With a single display connected and those options still enabled:

Canvas score - Test 1: 901 - Test 2: 2049
WebGL score - Test 1: 903 - Test 2: 1020
Total score: 4873
Your results compared to other users:
You score better than 96% of all users so far!
You score better than 99% of the people who use the same browser and OS!

Honestly, there is a bug in the AMD code somewhere with multiple displays
still.

I left ppfeaturemask set for this test. I am going to run it again with dual
displays.

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[Bug 208893] Navi (RX 5700 XT) system appears to hang with more than one display connected

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https://bugzilla.kernel.org/show_bug.cgi?id=208893

--- Comment #19 from Gordon (gordon@gordonite.tech) ---
Never mind I was wrong:

Canvas score - Test 1: 1235 - Test 2: 2115
WebGL score - Test 1: 911 - Test 2: 1005
Total score: 5266
Your results compared to other users
You score better than 97% of all users so far!
You score better than 100% of the people who use the same browser and OS!


With both displays results seem good now, apart from the OpenGL based crashes.

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