Thinkpad T495s black screen after standby

I'm pretty new to the archlinux/manjaro world and just installed it some days ago on my Thinkpad 495s. Everything works fine, but after suspending my device I just get a black screen (display is on but not showing anything) and have to hard reset the system.

inxi output

  Host: xeronox Kernel: 5.4.6-2-MANJARO x86_64 bits: 64 compiler: gcc 
  v: 9.2.0 Desktop: KDE Plasma 5.17.4 Distro: Manjaro Linux 
  Type: Laptop System: LENOVO product: 20QKS01E00 v: ThinkPad T495s 
  serial: <filter> 
  Mobo: LENOVO model: 20QKS01E00 serial: <filter> UEFI: LENOVO 
  v: R13ET40W(1.14 ) date: 10/29/2019 
  ID-1: BAT0 charge: 56.9 Wh condition: 59.2/57.0 Wh (104%) 
  model: LGC 02DL013 status: Charging 
  Topology: Quad Core model: AMD Ryzen 7 PRO 3700U w/ Radeon Vega Mobile Gfx 
  bits: 64 type: MT MCP arch: Zen+ rev: 1 L2 cache: 2048 KiB 
  flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm 
  bogomips: 36738 
  Speed: 1395 MHz min/max: 1400/2300 MHz Core speeds (MHz): 1: 1395 2: 1412 
  3: 2625 4: 2534 5: 1292 6: 1300 7: 1991 8: 3003 
  Device-1: AMD Picasso vendor: Lenovo driver: amdgpu v: kernel 
  bus ID: 05:00.0 
  Display: x11 server: X.Org 1.20.6 driver: amdgpu FAILED: ati 
  unloaded: modesetting tty: N/A 
  OpenGL: renderer: AMD RAVEN (DRM 3.35.0 5.4.6-2-MANJARO LLVM 9.0.0) 
  v: 4.5 Mesa 19.3.1 direct render: Yes 
  Device-1: AMD Raven/Raven2/Fenghuang HDMI/DP Audio vendor: Lenovo 
  driver: snd_hda_intel v: kernel bus ID: 05:00.1 
  Device-2: AMD Raven/Raven2/FireFlight/Renoir Audio Processor 
  vendor: Lenovo driver: N/A bus ID: 05:00.5 
  Device-3: AMD Family 17h HD Audio vendor: Lenovo driver: snd_hda_intel 
  v: kernel bus ID: 05:00.6 
  Sound Server: ALSA v: k5.4.6-2-MANJARO 
  Device-1: Intel Wireless-AC 9260 driver: iwlwifi v: kernel bus ID: 01:00.0 
  IF: wlp1s0 state: up mac: <filter> 
  Device-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet 
  vendor: Lenovo driver: r8169 v: kernel port: 2400 bus ID: 03:00.0 
  IF: enp3s0f0 state: down mac: <filter> 
  Local Storage: total: 953.87 GiB used: 44.53 GiB (4.7%) 
  ID-1: /dev/nvme0n1 vendor: Samsung model: MZVLB1T0HBLR-000L7 
  size: 953.87 GiB temp: 36 C 
  ID-1: / size: 922.87 GiB used: 43.67 GiB (4.7%) fs: ext4 dev: /dev/dm-0 
  System Temperatures: cpu: 55.1 C mobo: 0.0 C gpu: amdgpu temp: 55 C 
  Fan Speeds (RPM): cpu: 0 
  Processes: 301 Uptime: 39m Memory: 13.61 GiB used: 2.96 GiB (21.7%) 
  Init: systemd Compilers: gcc: 9.2.0 clang: 9.0.0 Shell: zsh v: 5.7.1 
  inxi: 3.0.37 

try using kernel 4.19 or even 5.5 if you're feeling adventurous and see if the problem persists.

Failing that, try disabling opengl compositing and using xrender instead.

Suspend issues have been reported on these fancy new ryzen apu's while the kernel catches up

edit: This could be worth a look too

@SebRut there are other ryzen 3000 users with the same issue. if you disable compositing before suspend it should wake fine. i think someone made a systemd service to handle this, not sure how it worked out though so just search the forum. or you can just use the keybind to disable/enable it manually. ctrl+F12 or something like that (it's been a while since using kde)

Switching to xrender seems to help, thanks :slight_smile:

I tried disabling compositing with alt+shift+f12 (taskbar turns black) but that didn't work.

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