[Bug 209019] New: [drm:dpcd_set_source_specific_data [amdgpu]] *ERROR* Error in DP aux read transaction, not writing source specific data

[Bug 209019] New: [drm:dpcd_set_source_specific_data [amdgpu]] *ERROR* Error in DP aux read transaction, not writing source specific data

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209019

            Bug ID: 209019
           Summary: [drm:dpcd_set_source_specific_data [amdgpu]] *ERROR*
                    Error in DP aux read transaction, not writing source
                    specific data
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.8.1
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: rtmasura+kernel@hotmail.com
        Regression: No

In kernel 5.8.1 and kernel 5.8.2 I am having an issue with multiple displays.
It's losing detection of one of my monitors and causing it to re-detect the
monitors, and detects it, then loses it again, and re-detects, and so forth
until it does eventually detect the monitor and the issue goes away for some
time. It's random, I can't reproduce it at will. 

I have managed to trigger it:
1. By maximizing a window on a monitor that is not the one it loses connection
to.

2. The screen graphical effect such as when xfce-screenshooter darkens the
screen to  capture a region


Let me know if there's anything else I can provide. I think Arch Linux is
currently at 5.8.3, so I'll do an upgrade.




uname -a:                                                                       
Linux abiggun 5.8.2-arch1-1 #1 SMP PREEMPT Thu, 20 Aug 2020 20:45:00 +0000
x86_64 GNU/Linux



dmesg:
[21159.093638] [drm:dpcd_set_source_specific_data [amdgpu]] *ERROR* Error in DP
aux read transaction, not writing source specific data
[21159.542494] [drm] amdgpu_dm_irq_schedule_work FAILED src 1
[21169.281470] [drm:dpcd_set_source_specific_data [amdgpu]] *ERROR* Error in DP
aux read transaction, not writing source specific data
[21169.712677] [drm] amdgpu_dm_irq_schedule_work FAILED src 1
[21179.389388] [drm:dpcd_set_source_specific_data [amdgpu]] *ERROR* Error in DP
aux read transaction, not writing source specific data
[21179.832841] [drm] amdgpu_dm_irq_schedule_work FAILED src 1
[21180.189786] [drm:dm_restore_drm_connector_state [amdgpu]] *ERROR* Restoring
old state failed with -12
[21193.108746] [drm:dm_restore_drm_connector_state [amdgpu]] *ERROR* Restoring
old state failed with -12
[21203.108238] [drm:dpcd_set_source_specific_data [amdgpu]] *ERROR* Error in DP
aux read transaction, not writing source specific data
[21203.563296] [drm] amdgpu_dm_irq_schedule_work FAILED src 1
[21231.665363] [drm:dpcd_set_source_specific_data [amdgpu]] *ERROR* Error in DP
aux read transaction, not writing source specific data
[21232.103796] [drm] amdgpu_dm_irq_schedule_work FAILED src 1
[21232.201005] [drm:dc_link_detect_helper [amdgpu]] *ERROR* No EDID read.
[21232.450766] [drm:dm_restore_drm_connector_state [amdgpu]] *ERROR* Restoring
old state failed with -12
[21234.635424] [drm:retrieve_link_cap [amdgpu]] *ERROR* retrieve_link_cap: Read
dpcd data failed.
[21255.768880] [drm:dpcd_set_source_specific_data [amdgpu]] *ERROR* Error in DP
aux read transaction, not writing source specific data
[21256.214181] [drm] amdgpu_dm_irq_schedule_work FAILED src 1
[21266.041592] [drm:dpcd_set_source_specific_data [amdgpu]] *ERROR* Error in DP
aux read transaction, not writing source specific data
[21266.514366] [drm] amdgpu_dm_irq_schedule_work FAILED src 1
[21268.894874] [drm:dpcd_set_source_specific_data [amdgpu]] *ERROR* Error in DP
aux read transaction, not writing source specific data
[21269.334409] [drm] amdgpu_dm_irq_schedule_work FAILED src 1
[21269.431262] [drm:dc_link_detect_helper [amdgpu]] *ERROR* No EDID read.
[21269.679883] [drm:dm_restore_drm_connector_state [amdgpu]] *ERROR* Restoring
old state failed with -12
[21272.604484] [drm] amdgpu_dm_irq_schedule_work FAILED src 1
[21273.016019] [drm:dm_restore_drm_connector_state [amdgpu]] *ERROR* Restoring
old state failed with -12



lscpu:
Architecture:                    x86_64
CPU op-mode(s):                  32-bit, 64-bit
Byte Order:                      Little Endian
Address sizes:                   48 bits physical, 48 bits virtual
CPU(s):                          6
On-line CPU(s) list:             0-5
Thread(s) per core:              1
Core(s) per socket:              6
Socket(s):                       1
NUMA node(s):                    1
Vendor ID:                       AuthenticAMD
CPU family:                      16
Model:                           10
Model name:                      AMD Phenom(tm) II X6 1090T Processor
Stepping:                        0
CPU MHz:                         3297.796
BogoMIPS:                        6423.85
Virtualization:                  AMD-V
L1d cache:                       384 KiB
L1i cache:                       384 KiB
L2 cache:                        3 MiB
L3 cache:                        6 MiB
NUMA node0 CPU(s):               0-5
Vulnerability Itlb multihit:     Not affected
Vulnerability L1tf:              Not affected
Vulnerability Mds:               Not affected
Vulnerability Meltdown:          Not affected
Vulnerability Spec store bypass: Not affected
Vulnerability Spectre v1:        Mitigation; usercopy/swapgs barriers and
__user pointer sanitization
Vulnerability Spectre v2:        Mitigation; Full AMD retpoline, STIBP
disabled, RSB filling
Vulnerability Srbds:             Not affected
Vulnerability Tsx async abort:   Not affected
Flags:                           fpu vme de pse tsc msr pae mce cx8 apic sep
mtrr pge mca cmov pat pse36 clflush mmx fxsr sse
                                  sse2 ht syscall nx mmxext fxsr_opt pdpe1gb
rdtscp lm 3dnowext 3dnow constant_tsc rep_good n
                                 opl nonstop_tsc cpuid extd_apicid aperfmperf
pni monitor cx16 popcnt lahf_lm cmp_legacy svm 
                                 extapic cr8_legacy abm sse4a misalignsse
3dnowprefetch osvw ibs skinit wdt cpb hw_pstate vmm
                                 call npt lbrv svm_lock nrip_save pausefilter




lspci (note: the nvidia card is blacklisted and passed to KVM guests. Vega56 is
the one connected to the monitors):
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD/ATI] RD890 Northbridge
only single slot PCI-e GFX Hydra part (rev 02)
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD/ATI] RD890S/RD990 I/O Memory
Management Unit (IOMMU)
00:02.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RD890/RD9x0/RX980
PCI to PCI bridge (PCI Express GFX port 0)
00:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RD890/RD9x0/RX980
PCI to PCI bridge (PCI Express GPP Port 0)
00:07.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RD890/RD9x0/RX980
PCI to PCI bridge (PCI Express GPP Port 3)
00:0b.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RD890/RD990 PCI to
PCI bridge (PCI Express GFX2 port 0)
00:0d.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RD890/RD9x0/RX980
PCI to PCI bridge (PCI Express GPP2 Port 0)
00:11.0 RAID bus controller: Advanced Micro Devices, Inc. [AMD/ATI]
SB7x0/SB8x0/SB9x0 SATA Controller [RAID5 mode] (rev 40)
00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI]
SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:12.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI]
SB7x0/SB8x0/SB9x0 USB EHCI Controller
00:13.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI]
SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:13.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI]
SB7x0/SB8x0/SB9x0 USB EHCI Controller
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 SMBus Controller
(rev 42)
00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 Azalia
(Intel HDA) (rev 40)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0
LPC host controller (rev 40)
00:14.4 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 PCI to PCI
Bridge (rev 40)
00:14.5 USB controller: Advanced Micro Devices, Inc. [AMD/ATI]
SB7x0/SB8x0/SB9x0 USB OHCI2 Controller
00:16.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI]
SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:16.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI]
SB7x0/SB8x0/SB9x0 USB EHCI Controller
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 10h Processor
HyperTransport Configuration
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 10h Processor
Address Map
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 10h Processor
DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 10h Processor
Miscellaneous Control
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 10h Processor
Link Control
02:00.0 PCI bridge: PLX Technology, Inc. PEX 8624 24-lane, 6-Port PCI Express
Gen 2 (5.0 GT/s) Switch [ExpressLane] (rev bb)
03:04.0 PCI bridge: PLX Technology, Inc. PEX 8624 24-lane, 6-Port PCI Express
Gen 2 (5.0 GT/s) Switch [ExpressLane] (rev bb)
03:05.0 PCI bridge: PLX Technology, Inc. PEX 8624 24-lane, 6-Port PCI Express
Gen 2 (5.0 GT/s) Switch [ExpressLane] (rev bb)
03:06.0 PCI bridge: PLX Technology, Inc. PEX 8624 24-lane, 6-Port PCI Express
Gen 2 (5.0 GT/s) Switch [ExpressLane] (rev bb)
03:08.0 PCI bridge: PLX Technology, Inc. PEX 8624 24-lane, 6-Port PCI Express
Gen 2 (5.0 GT/s) Switch [ExpressLane] (rev bb)
03:09.0 PCI bridge: PLX Technology, Inc. PEX 8624 24-lane, 6-Port PCI Express
Gen 2 (5.0 GT/s) Switch [ExpressLane] (rev bb)
04:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection
(rev 01)
04:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection
(rev 01)
06:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection
(rev 01)
06:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection
(rev 01)
07:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection
(rev 01)
07:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection
(rev 01)
09:00.0 VGA compatible controller: NVIDIA Corporation GP104GL [Quadro P4000]
(rev a1)
09:00.1 Audio device: NVIDIA Corporation GP104 High Definition Audio Controller
(rev a1)
0a:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev
03)
0b:00.0 SATA controller: JMicron Technology Corp. JMB363 SATA/IDE Controller
(rev 03)
0b:00.1 IDE interface: JMicron Technology Corp. JMB363 SATA/IDE Controller (rev
03)
0c:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Vega 10 PCIe Bridge (rev
c3)
0d:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Vega 10 PCIe Bridge
0e:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Vega
10 XL/XT [Radeon RX Vega 56/64] (rev c3)
0e:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Vega 10 HDMI Audio
[Radeon Vega 56/64]

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[Bug 209019] [drm:dpcd_set_source_specific_data [amdgpu]] *ERROR* Error in DP aux read transaction, not writing source specific data

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209019

Alex Deucher (alexdeucher@gmail.com) changed:

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

--- Comment #1 from Alex Deucher (alexdeucher@gmail.com) ---
Please attach your dmesg output and Xorg log (if using X).  If this is a
regression, can you bisect?

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[Bug 209019] [drm:dpcd_set_source_specific_data [amdgpu]] *ERROR* Error in DP aux read transaction, not writing source specific data

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209019

--- Comment #2 from rtmasura+kernel@hotmail.com ---
Hmm I don't appear to have an up to date Xorg log, unless I'm misunderstanding
where it should be:

head /var/log/Xorg.0.log                                                        
[1105825.601] (--) Log file renamed from "/var/log/Xorg.pid-1681661.log" to
"/var/log/Xorg.0.log"
[1105825.603] 
X.Org X Server 1.20.8
X Protocol Version 11, Revision 0
[1105825.603] Build Operating System: Linux Arch Linux
[1105825.603] Current Operating System: Linux abiggun 5.6.11-arch1-1 #1 SMP
PREEMPT Wed, 06 May 2020 17:32:37 +0000 x86_64
[1105825.603] Kernel command line: BOOT_IMAGE=/vmlinuz-linux
root=UUID=ef7e3964-346a-44d8-b5e9-ee81e59833b9 rw
cryptdevice=UUID=64e88839-e390-4431-bbe9-9f25b41860aa:cryptroot
root=/dev/mapper/cryptroot usb-storage.quirks=0bc2:ab44:u
usb-storage.quirks=0bc2:ab38:u usb-storage.quirks=0bc2:ab45:u amd_iommu=on
iommu=pt apparmor=1 security=apparmor vfio-pci.ids=10de:1bb1,10de:10f0
[1105825.603] Build Date: 05 May 2020  05:08:17AM
[1105825.603]  
[1105825.603] Current version of pixman: 0.40.0

tail /var/log/Xorg.0.log                                                        
[1105827.133] (II) UnloadModule: "libinput"
[1105827.133] (II) UnloadModule: "libinput"
[1105827.133] (II) UnloadModule: "libinput"
[1105827.133] (II) UnloadModule: "libinput"
[1105827.133] (II) UnloadModule: "libinput"
[1105827.133] (II) UnloadModule: "libinput"
[1105827.133] (II) UnloadModule: "libinput"
[1105827.133] (II) UnloadModule: "libinput"
[1105827.134] (II) UnloadModule: "libinput"
[1105827.188] (II) Server terminated successfully (0). Closing log file.


I have no dmesg other than the one I provided, there were no other errors in
dmesg. 


So journal is probably the best bet. I can attach it all if you like:
sudo journalctl -b -1 -p 3 
-- Logs begin at Wed 2020-07-22 10:17:18 PDT, end at Mon 2020-08-24 12:40:41
PDT. --
Aug 23 11:56:00 abiggun systemd-modules-load[391]: Failed to find module
'vboxdrv'
Aug 23 11:56:00 abiggun systemd-modules-load[391]: Failed to find module
'vboxnetflt'
Aug 23 11:56:00 abiggun systemd-modules-load[391]: Failed to find module
'vboxnetadp'
Aug 23 11:56:00 abiggun systemd-modules-load[391]: Failed to find module
'vboxpci'
Aug 23 11:56:00 abiggun systemd-udevd[421]:
/etc/udev/rules.d/40-libsane.rules:26: GOTO="libsane_rules_end" has no matching
label, ignoring
Aug 23 11:56:01 abiggun systemd-udevd[421]:
/etc/udev/rules.d/S99-2000S1.rules:26: GOTO="libsane_rules_end" has no matching
label, ignoring
Aug 23 11:56:13 abiggun systemd[1367]: pam_systemd_home(systemd-user:account):
Failed to query user record: Unit dbus-org.freedesktop.home1.service not found.
Aug 23 11:56:13 abiggun smbd[1229]: [2020/08/23 11:56:13.018977,  0]
../../lib/util/become_daemon.c:135(daemon_ready)
Aug 23 11:56:13 abiggun smbd[1229]:   daemon_ready: daemon 'smbd' finished
starting up and ready to serve connections
Aug 23 11:56:19 abiggun gdm-password][1994]: PAM unable to
dlopen(/usr/lib/security/pam_gnome_keyring.so):
/usr/lib/security/pam_gnome_keyring.so: cannot open shared object file: No such
file or directory
Aug 23 11:56:19 abiggun gdm-password][1994]: PAM adding faulty module:
/usr/lib/security/pam_gnome_keyring.so
Aug 23 11:56:22 abiggun gdm-password][1994]:
pam_systemd_home(gdm-password:account): Failed to query user record: Unit
dbus-org.freedesktop.home1.service not found.
Aug 23 11:56:22 abiggun systemd[2024]: pam_systemd_home(systemd-user:account):
Failed to query user record: Unit dbus-org.freedesktop.home1.service not found.
Aug 23 11:56:24 abiggun systemd-resolved[1181]: Failed to send hostname reply:
Invalid argument
Aug 23 19:13:45 abiggun kernel: [drm:dpcd_set_source_specific_data [amdgpu]]
*ERROR* Error in DP aux read transaction, not writing source specific data
Aug 23 19:13:52 abiggun xscreensaver[2469]:
pam_systemd_home(xscreensaver:auth): Failed to query user record: Unit
dbus-org.freedesktop.home1.service not found.
Aug 23 19:13:53 abiggun kernel: ata3: softreset failed (1st FIS failed)
Aug 23 19:13:53 abiggun kernel: ata4: softreset failed (device not ready)
Aug 23 19:13:53 abiggun kernel: ata2: softreset failed (device not ready)
Aug 23 19:13:53 abiggun kernel: ata1: softreset failed (device not ready)
Aug 23 19:13:53 abiggun kernel: ata6: softreset failed (device not ready)
Aug 23 19:13:53 abiggun kernel: ata5: softreset failed (device not ready)
Aug 23 19:46:38 abiggun kernel: [drm:dpcd_set_source_specific_data [amdgpu]]
*ERROR* Error in DP aux read transaction, not writing source specific data
Aug 23 19:46:48 abiggun kernel: [drm:dpcd_set_source_specific_data [amdgpu]]
*ERROR* Error in DP aux read transaction, not writing source specific data
Aug 23 19:46:58 abiggun kernel: [drm:dpcd_set_source_specific_data [amdgpu]]
*ERROR* Error in DP aux read transaction, not writing source specific data
Aug 23 19:46:59 abiggun kernel: [drm:dm_restore_drm_connector_state [amdgpu]]
*ERROR* Restoring old state failed with -12
Aug 23 19:47:12 abiggun kernel: [drm:dm_restore_drm_connector_state [amdgpu]]
*ERROR* Restoring old state failed with -12
Aug 23 19:47:22 abiggun kernel: [drm:dpcd_set_source_specific_data [amdgpu]]
*ERROR* Error in DP aux read transaction, not writing source specific data
Aug 23 19:47:51 abiggun kernel: [drm:dpcd_set_source_specific_data [amdgpu]]
*ERROR* Error in DP aux read transaction, not writing source specific data
Aug 23 19:47:51 abiggun kernel: [drm:dc_link_detect_helper [amdgpu]] *ERROR* No
EDID read.
Aug 23 19:47:52 abiggun kernel: [drm:dm_restore_drm_connector_state [amdgpu]]
*ERROR* Restoring old state failed with -12
Aug 23 19:47:54 abiggun kernel: [drm:retrieve_link_cap [amdgpu]] *ERROR*
retrieve_link_cap: Read dpcd data failed.
Aug 23 19:48:15 abiggun kernel: [drm:dpcd_set_source_specific_data [amdgpu]]
*ERROR* Error in DP aux read transaction, not writing source specific data
Aug 23 19:48:25 abiggun kernel: [drm:dpcd_set_source_specific_data [amdgpu]]
*ERROR* Error in DP aux read transaction, not writing source specific data
Aug 23 19:48:28 abiggun kernel: [drm:dpcd_set_source_specific_data [amdgpu]]
*ERROR* Error in DP aux read transaction, not writing source specific data
Aug 23 19:48:28 abiggun kernel: [drm:dc_link_detect_helper [amdgpu]] *ERROR* No
EDID read.
Aug 23 19:48:29 abiggun kernel: [drm:dm_restore_drm_connector_state [amdgpu]]
*ERROR* Restoring old state failed with -12
Aug 23 19:48:32 abiggun kernel: [drm:dm_restore_drm_connector_state [amdgpu]]
*ERROR* Restoring old state failed with -12
Aug 23 21:04:05 abiggun sudo[37251]: pam_systemd_home(sudo:account): Failed to
query user record: Unit dbus-org.freedesktop.home1.service not found.
Aug 23 22:29:22 abiggun sudo[48011]: pam_systemd_home(sudo:account): Failed to
query user record: Unit dbus-org.freedesktop.home1.service not found.
Aug 23 22:29:30 abiggun sudo[48099]: pam_systemd_home(sudo:account): Failed to
query user record: Unit dbus-org.freedesktop.home1.service not found.
Aug 23 22:29:34 abiggun sudo[48131]: pam_systemd_home(sudo:account): Failed to
query user record: Unit dbus-org.freedesktop.home1.service not found.
Aug 23 22:29:44 abiggun sudo[48157]: pam_systemd_home(sudo:account): Failed to
query user record: Unit dbus-org.freedesktop.home1.service not found.
Aug 23 22:29:45 abiggun systemd-udevd[421]:
/etc/udev/rules.d/40-libsane.rules:26: GOTO="libsane_rules_end" has no matching
label, ignoring
Aug 23 22:29:45 abiggun systemd-udevd[421]:
/etc/udev/rules.d/S99-2000S1.rules:26: GOTO="libsane_rules_end" has no matching
label, ignoring
Aug 23 22:29:45 abiggun gdm[1234]: GLib: g_hash_table_foreach: assertion
'version == hash_table->version' failed
Aug 23 22:29:48 abiggun kernel: watchdog: watchdog0: watchdog did not stop!

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[Bug 209019] [drm:dpcd_set_source_specific_data [amdgpu]] *ERROR* Error in DP aux read transaction, not writing source specific data

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209019

--- Comment #3 from Alex Deucher (alexdeucher@gmail.com) ---
Please attach your full dmesg output.

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[Bug 209019] [drm:dpcd_set_source_specific_data [amdgpu]] *ERROR* Error in DP aux read transaction, not writing source specific data

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209019

--- Comment #4 from rtmasura+kernel@hotmail.com ---
Created attachment 292159
  --> https://bugzilla.kernel.org/attachment.cgi?id=292159&action=edit
dmesg

I had to wait for the issue to happen again. This is on kernel 5.8.3, and it
did not resolve itself until I unplugged a monitor.

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[Bug 209019] [drm:dpcd_set_source_specific_data [amdgpu]] *ERROR* Error in DP aux read transaction, not writing source specific data

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209019

--- Comment #5 from rtmasura+kernel@hotmail.com ---
Since I started getting this I was using the LTS kernel during the day because
this is my work from home machine. I just had it happen with 5.4.60-1-lts. The
virtual machine running on top of the machine IS using 5.8.2, but as this one
does not have anything passed through other than USB devices, and the graphical
display is spice, I think it's unlikely to be caused by the kernel. It's likely
something else, so that means this ticket probably should be closed. I was one
of the people bothered by https://bugzilla.kernel.org/show_bug.cgi?id=207383
and it was just suspicious that it began happening only after the upgrade to
5.8.1 which included the fix. 

As a troubleshooting step I disconnected power but not video, which caused the
issue to remain. Only unplugging the video input stopped it. I've replaced the
wire as a first troubleshooting step. If you have an idea what could cause it
I'm all ears; right now I'll just assume hardware until I can rule it out.

Thanks for your help.

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[Bug 209019] [drm:dpcd_set_source_specific_data [amdgpu]] *ERROR* Error in DP aux read transaction, not writing source specific data

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209019

--- Comment #6 from rtmasura+kernel@hotmail.com ---
Hmm, new wire did not help. And it always recovers during shutdown of the
kernel, so when it leaves graphical mode. I don't think that rules out
hardware, though, so still testing.

Also didn't realize they had backported the hack to the LTS kernel.. so it also
is not ruled out.

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[Bug 209019] [drm:dpcd_set_source_specific_data [amdgpu]] *ERROR* Error in DP aux read transaction, not writing source specific data

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209019

--- Comment #7 from rtmasura+kernel@hotmail.com ---
Created attachment 292183
  --> https://bugzilla.kernel.org/attachment.cgi?id=292183&action=edit
Xorg.0.log

Found the second place for the log, let me know if it helps at all

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