Issues with new laptop and AMD CPU

Issues & Assistance
1

I have problem with my new Lenovo laptop and AMD CPU.
When I use terminal or I am searching in app launcher, my screen is refreshing only when my mouse moves. Same happens sometimes in systemsettings when i use only my keyboard. I guess it is some problem with CPU and its iGPU and drivers that I have. I haven’t found a solution for my laptop specs. I just found there might be problem with lenovo specifically and its Phoenix3 vendor drivers.
Do you have any suggestions?
Some info about my pc that might help:

System:
  Kernel: 6.12.7-2-cachyos arch: x86_64 bits: 64 compiler: clang v: 18.1.8
    clocksource: tsc
  Desktop: KDE Plasma v: 6.2.4 tk: Qt v: N/A wm: kwin_wayland vt: 2 dm: SDDM
    Distro: CachyOS base: Arch Linux
Machine:
  Type: Laptop System: LENOVO product: 83DD v: IdeaPad Slim 5 16AHP9
    serial: <superuser required> Chassis: type: 10 v: IdeaPad Slim 5 16AHP9
    serial: <superuser required>
  Mobo: LENOVO model: LNVNB161216 v: No DPK serial: <superuser required>
    part-nu: LENOVO_MT_83DD_BU_idea_FM_IdeaPad Slim 5 16AHP9
    uuid: <superuser required> UEFI: LENOVO v: NGCN25WW date: 04/04/2024
Battery:
  ID-1: BAT1 charge: 59.9 Wh (78.8%) condition: 76.0/76.0 Wh (100.0%)
    power: 6.9 W volts: 16.4 min: 15.1 model: SMP L23M4PK3 type: Unknown
    serial: <filter> status: discharging cycles: 2
CPU:
  Info: 6-core model: AMD Ryzen 5 8645HS w/ Radeon 760M Graphics bits: 64
    type: MT MCP smt: enabled arch: Zen 4 rev: 2 cache: L1: 384 KiB L2: 6 MiB
    L3: 16 MiB
  Speed (MHz): avg: 1100 min/max: 400/5015 boost: enabled cores: 1: 1100
    2: 1100 3: 1100 4: 1100 5: 1100 6: 1100 7: 1100 8: 1100 9: 1100 10: 1100
    11: 1100 12: 1100 bogomips: 103008
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
Graphics:
  Device-1: Advanced Micro Devices [AMD/ATI] Phoenix3 vendor: Lenovo
    driver: amdgpu v: kernel arch: RDNA-3 pcie: speed: 16 GT/s lanes: 16 ports:
    active: eDP-1 empty: DP-1, DP-2, DP-3, DP-4, DP-5, DP-6, HDMI-A-1,
    Writeback-1 bus-ID: 04:00.0 chip-ID: 1002:1900 class-ID: 0300 temp: 35.0 C
  Device-2: Syntek Integrated Camera driver: uvcvideo type: USB rev: 2.0
    speed: 480 Mb/s lanes: 1 bus-ID: 3-1:2 chip-ID: 174f:1820 class-ID: fe01
    serial: <filter>
  Display: wayland server: X.org v: 1.21.1.15 with: Xwayland v: 24.1.4
    compositor: kwin_wayland driver: N/A display-ID: 0
  Monitor-1: eDP-1 res: 1862x1164 size: N/A modes: N/A
  API: EGL v: 1.5 hw: drv: amd radeonsi platforms: device: 0 drv: radeonsi
    device: 1 drv: swrast gbm: drv: kms_swrast surfaceless: drv: radeonsi
    wayland: drv: radeonsi x11: drv: radeonsi
  API: OpenGL v: 4.6 compat-v: 4.5 vendor: amd mesa v: 24.3.2-cachyos1.2
    glx-v: 1.4 direct-render: yes renderer: AMD Radeon Graphics (radeonsi
    gfx1103_r1 LLVM 18.1.8 DRM 3.59 6.12.7-2-cachyos) device-ID: 1002:1900
    display-ID: :0.0
  API: Vulkan v: 1.4.303 layers: N/A surfaces: xcb,xlib,wayland device: 0
    type: integrated-gpu driver: N/A device-ID: 1002:1900

[SOLUTION was the parameter amdgpu.dcdebugmask=0x410 ]

2

Please try adding either amdgpu.dcdebugmask=0x410 or amdgpu.dcdebugmask=0x10 in the kernel boot parameters.

edit: Also please try this kernel without the parameters above.

3

I might just be a big noob, but how do i build this kernel? I only build kernels from kernel org with make, but this is not simiar right?

4

The kernel is already prebuilt for you, just download the packages and install it with sudo pacman -U *.pkg.tar.zst

5

tried it, didnt work…

6

Neither did any of the amdgpu debug masks?

7

if I did it correctly, it didn’t work.

8

You can check if you did it correctly by checking if its present in cat /proc/cmdline.

9

yeah, it is not there. I added it into /boot/loader/entries/linux-cachyos.conf is that right?

10

ok, now it works!! I just made small mistake when copying, for some reason it was pasted on other line but in terminal I saw it in same line.

Well, thanks again! :smile:

11

Which one worked? :smile:

12

amdgpu.dcdebugmask=0x410. Havent’t even tried second one because this one works perfectly.

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