I have a TUXEDO Pulse 14 Gen1 running 20.04.1-Ubuntu. Since yesterday, every time I wake up my laptop from sleep or hibernation, the laptop screen is full of snow. I have not installed any new drivers or anything, although I cannot rule out if the system has done so in the background.
Even if the laptop screen is full of snow, I can connect an external monitor and work on that just fine. I can also switch between extending and only using one monitor. If I choose to only use the external monitor, the laptop screen goes black. As soon as I attempt to use the laptop screen, it is again full of snow. Once I restart the laptop, everything is fine again until it goes to sleep, after which there's the snow again!
At first, I thought it might be a loose connection, however, since it consistently and only happens when the computer wakes up, it might also be a software issue. Does anyone have an idea (besides reinstalling Ubuntu) how I could figure out if it is software or a hardware issue? And if it is a software issue, how to fix it?
This is what it looks like:
laptop screen with snow and okay external monitor
Some info on my system:
USER@USER-TUXEDO-Pulse-14-Gen1:~$ uname -a
Linux USER-TUXEDO-Pulse-14-Gen1 5.13.0-27-generic #29~20.04.1-Ubuntu SMP Fri Jan 14 00:32:30 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
USER@USER-TUXEDO-Pulse-14-Gen1:~$ ps -e | grep tty
1139 tty7 00:00:26 Xorg
1142 tty1 00:00:00 agetty
USER@USER-TUXEDO-Pulse-14-Gen1:~$ sudo lshw -short
H/W path Device Class Description
===========================================================
system TUXEDO Pulse 14 Gen1 (PULSE1401)
/0 bus PULSE1401
/0/0 memory 64KiB BIOS
/0/a memory 32GiB System Memory
/0/a/0 memory 16GiB SODIMM DDR4 Synchronous Un
/0/a/1 memory 16GiB SODIMM DDR4 Synchronous Un
/0/c memory 512KiB L1 cache
/0/d memory 4MiB L2 cache
/0/e memory 8MiB L3 cache
/0/f processor AMD Ryzen 7 4800H with Radeon Gr
/0/100 bridge Renoir Root Complex
/0/100/0.2 generic Renoir IOMMU
/0/100/1.2 bridge Renoir PCIe GPP Bridge
/0/100/1.2/0 wlp1s0 network Wi-Fi 6 AX200
/0/100/1.3 bridge Renoir PCIe GPP Bridge
/0/100/1.3/0 eno1 network RTL8111/8168/8411 PCI Express Gi
/0/100/8.1 bridge Renoir Internal PCIe GPP Bridge
/0/100/8.1/0 display Renoir
/0/100/8.1/0.1 multimedia Advanced Micro Devices, Inc. [AM
/0/100/8.1/0.2 generic Family 17h (Models 10h-1fh) Plat
/0/100/8.1/0.3 bus Renoir USB 3.1
/0/100/8.1/0.3/0 usb1 bus xHCI Host Controller
/0/100/8.1/0.3/0/3 multimedia HD Webcam
/0/100/8.1/0.3/0/4 bus USB2.0 Hub
/0/100/8.1/0.3/0/4/4 communication Bluetooth wireless interface
/0/100/8.1/0.3/1 usb2 bus xHCI Host Controller
/0/100/8.1/0.4 bus Renoir USB 3.1
/0/100/8.1/0.4/0 usb3 bus xHCI Host Controller
/0/100/8.1/0.4/1 usb4 bus xHCI Host Controller
/0/100/8.1/0.5 multimedia Raven/Raven2/FireFlight/Renoir A
/0/100/8.1/0.6 multimedia Family 17h (Models 10h-1fh) HD A
/0/100/8.2 bridge Renoir Internal PCIe GPP Bridge
/0/100/8.2/0 storage FCH SATA Controller [AHCI mode]
/0/100/8.2/0.1 storage FCH SATA Controller [AHCI mode]
/0/100/14 bus FCH SMBus Controller
/0/100/14.3 bridge FCH LPC Bridge
/0/101 bridge Renoir PCIe Dummy Host Bridge
/0/102 bridge Renoir PCIe Dummy Host Bridge
/0/103 bridge Renoir PCIe Dummy Host Bridge
/0/104 bridge Renoir Device 24: Function 0
/0/105 bridge Renoir Device 24: Function 1
/0/106 bridge Renoir Device 24: Function 2
/0/107 bridge Renoir Device 24: Function 3
/0/108 bridge Renoir Device 24: Function 4
/0/109 bridge Renoir Device 24: Function 5
/0/10a bridge Renoir Device 24: Function 6
/0/10b bridge Renoir Device 24: Function 7
/0/1 system PnP device PNP0c01
/0/2 system PnP device PNP0b00
/0/3 input PnP device PNP0303
/0/4 system PnP device PNP0c02
/0/5 scsi1 storage
/0/5/0.0.0 /dev/sda disk 1TB Samsung SSD 860
/0/5/0.0.0/1 /dev/sda1 volume 511MiB Windows FAT volume
/0/5/0.0.0/2 /dev/sda2 volume 923GiB EXT4 volume
/0/5/0.0.0/3 /dev/sda3 volume 8191MiB Linux swap volume
