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Currently on Kernel 5.9.11 but experienced hang in 5.8.x as well that seem to step from Chrome acceleration. I have since disable hardware acceleration in chrome have not seen the hang since. When the hang occurs, Xorg pegs one CPU core at 100%. Restarting the display-manager leads to a blank screen and no monitor found. Including DMESG from last hang that showed a segfault when clicking a link from Signal. The problem occurred previous to Signal when simply navigating around in Chrome.
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After turning off monitor and turning back on, there is no video output until restarting or a hibernation cycle.
8560.816007] NVRM: GPU at PCI:0000:01:00: GPU-d935e417-74f8-5472-772c-940d0312f5a6
[ 8560.816008] NVRM: GPU Board Serial Number:
[ 8560.816010] NVRM: Xid (PCI:0000:01:00): 62, pid=1511, 0000(0000) 00000000 00000000
[ 8569.610385] NVRM: Xid (PCI:0000:01:00): 16, pid=0, Head 00000000 Count 0016914d
[ 8578.826385] NVRM: Xid (PCI:0000:01:00): 16, pid=0, Head 00000000 Count 0016914e
[ 8593.586317] GpuWatchdog[12915]: segfault at 0 ip 00005584be1c3107 sp 00007f0f5130b5d0 error 6 in signal-desktop[5584bafe2000+53d6000]
[ 8593.586322] Code: 7d b7 00 79 09 48 8b 7d a0 e8 35 52 d3 fe 8b 83 00 01 00 00 85 c0 0f 84 91 00 00 00 48 8b 03 48 89 df be 01 00 00 00 ff 50 68 <c7> 04 25 00 00 00 00 37 13 00 00 c6 05 17 bc 6f 02 01 80 7d 87 00
[ 8598.282545] NVRM: Xid (PCI:0000:01:00): 16, pid=0, Head 00000000 Count 0016914f
[ 8606.474556] NVRM: Xid (PCI:0000:01:00): 16, pid=1926, Head 00000000 Count 00169150
[ 8614.666610] NVRM: Xid (PCI:0000:01:00): 16, pid=1926, Head 00000000 Count 00169151
[ 8622.858664] NVRM: Xid (PCI:0000:01:00): 16, pid=1926, Head 00000000 Count 00169152
[ 8631.050720] NVRM: Xid (PCI:0000:01:00): 16, pid=1926, Head 00000000 Count 00169153
[ 8639.242773] NVRM: Xid (PCI:0000:01:00): 16, pid=1926, Head 00000000 Count 00169154
[ 8935.463421] usb 3-3: USB disconnect, device number 3
[ 8940.782754] usb 3-3: new full-speed USB device number 10 using xhci_hcd
[ 8940.910926] usb 3-3: New USB device found, idVendor=046d, idProduct=c52b, bcdDevice=12.10
[ 8940.910927] usb 3-3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 8940.910928] usb 3-3: Product: USB Receiver
[ 8940.910929] usb 3-3: Manufacturer: Logitech
[ 8940.917096] logitech-djreceiver 0003:046D:C52B.000F: hiddev97,hidraw2: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:14.0-3/input2
[ 8941.030688] input: Logitech MX Master as /devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3:1.2/0003:046D:C52B.000F/0003:046D:4041.0010/input/input42
[ 8941.030868] logitech-hidpp-device 0003:046D:4041.0010: input,hidraw3: USB HID v1.11 Keyboard [Logitech MX Master] on usb-0000:00:14.0-3/input2:1
[ 8963.268834] rfkill: input handler enabled
[ 8970.396643] logitech-hidpp-device 0003:046D:4041.0010: HID++ 4.5 device connected.
[ 8973.692284] traps: ThreadPoolSingl[2981] trap int3 ip:5567e849a7f1 sp:7f1215bd3a90 error:0 in chrome[5567e5977000+7b80000]
[ 9089.894880] usb 3-10.1: reset high-speed USB device number 7 using xhci_hcd
[ 9116.189954] resource sanity check: requesting [mem 0x000c0000-0x000fffff], which spans more than PCI Bus 0000:00 [mem 0x000d0000-0x000d3fff window]
[ 9116.190060] caller _nv000709rm+0x1af/0x200 [nvidia] mapping multiple BARs
[ 9120.391476] NVRM: GPU 0000:01:00.0: RmInitAdapter failed! (0x26:0x65:1239)
[ 9120.391508] NVRM: GPU 0000:01:00.0: rm_init_adapter failed, device minor number 0
[ 9168.974688] resource sanity check: requesting [mem 0x000c0000-0x000fffff], which spans more than PCI Bus 0000:00 [mem 0x000d0000-0x000d3fff window]
[ 9168.974796] caller _nv000709rm+0x1af/0x200 [nvidia] mapping multiple BARs
[ 9185.122025] NVRM: GPU 0000:01:00.0: GPU has fallen off the bus.
[ 9185.142919] NVRM: GPU 0000:01:00.0: RmInitAdapter failed! (0x26:0xb:1239)
[ 9185.142958] NVRM: GPU 0000:01:00.0: rm_init_adapter failed, device minor number 0
[ 9297.778643] NVRM: GPU 0000:01:00.0: RmInitAdapter failed! (0x23:0x56:574)
[ 9297.778657] NVRM: GPU 0000:01:00.0: rm_init_adapter failed, device minor number 0
```[nvidia-bug-report.log|attachment](upload://4qOKcqTYBGVPtJdnnys0lSCYLn6.log) (1.8 MB)