I’ve recently been getting weird periodic FPS using an RX 6600 that’s only about two months old on a fresh install. Games will be running smoothly at 60 FPS and then will start to fluctuate anywhere between 30-50 FPS (even when not under load) typically for around 5-10 seconds until they return back to 60 FPS for some time until the drops happen again, repeating periodically. Other troubleshooting steps (which haven’t fixed the issue) I’ve done includes trying mesa-git, different kernels (5.15, 5.16, and 5.17 all face the same issue) changing the PCI-E connector, reinserting the GPU, setting minmum GPU clock speed to match maximum clock speed, and increasing the power limit. BIOS is up to date as is practically everything else.
inxi -CGMmazy
Machine:
Type: Desktop System: Gigabyte product: B450M DS3H WIFI v: N/A
serial: <superuser required>
Mobo: Gigabyte model: B450M DS3H WIFI-CF serial: <superuser required>
UEFI: American Megatrends LLC. v: F64a date: 02/17/2022
Memory:
RAM: total: 15.61 GiB used: 6.33 GiB (40.5%)
RAM Report:
permissions: Unable to run dmidecode. Root privileges required.
CPU:
Info: model: AMD Ryzen 5 3600 bits: 64 type: MT MCP arch: Zen 2
family: 0x17 (23) model-id: 0x71 (113) stepping: 0 microcode: 0x8701021
Topology: cpus: 1x cores: 6 tpc: 2 threads: 12 smt: enabled cache:
L1: 384 KiB desc: d-6x32 KiB; i-6x32 KiB L2: 3 MiB desc: 6x512 KiB
L3: 32 MiB desc: 2x16 MiB
Speed (MHz): avg: 2337 high: 2633 min/max: 2200/4208 boost: enabled
scaling: driver: acpi-cpufreq governor: ondemand cores: 1: 2546 2: 2239
3: 2208 4: 2575 5: 2078 6: 2313 7: 2488 8: 2319 9: 2293 10: 2633 11: 2118
12: 2240 bogomips: 86271
Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
Vulnerabilities:
Type: itlb_multihit status: Not affected
Type: l1tf status: Not affected
Type: mds status: Not affected
Type: meltdown status: Not affected
Type: spec_store_bypass
mitigation: Speculative Store Bypass disabled via prctl
Type: spectre_v1
mitigation: usercopy/swapgs barriers and __user pointer sanitization
Type: spectre_v2
mitigation: Retpolines, IBPB: conditional, STIBP: conditional, RSB filling
Type: srbds status: Not affected
Type: tsx_async_abort status: Not affected
Graphics:
Device-1: AMD Navi 23 [Radeon RX 6600/6600 XT/6600M] vendor: ASRock
driver: amdgpu v: kernel pcie: gen: 4 speed: 16 GT/s lanes: 16 ports:
active: HDMI-A-1 empty: DP-1,DP-2,DP-3 bus-ID: 0c:00.0 chip-ID: 1002:73ff
class-ID: 0300
Device-2: DisplayLink Dell D3100 Docking Station type: USB driver: usbfs
bus-ID: 1-9.1:6 chip-ID: 17e9:436e class-ID: fe01 serial: <filter>
Device-3: Focusrite-Novation Scarlett 2i2 Camera type: USB
driver: snd-usb-audio,usb-storage bus-ID: 3-2:2 chip-ID: 1235:8210
class-ID: 0806 serial: <filter>
Display: wayland server: X.org v: 1.21.1.3 with: Xwayland v: 22.1.1
compositor: gnome-shell v: 42.1 driver: X: loaded: amdgpu,modesetting,radeon
alternate: fbdev,vesa gpu: amdgpu,evdi display-ID: 0
Monitor-1: DVI-I-1 model: Acer VW237Q serial: <filter> built: 2020
res: 1920x1200 dpi: 100 gamma: 1.2 size: 488x297mm (19.21x11.69")
diag: 571mm (22.5") ratio: 15:9 modes: max: 1920x1200 min: 720x400
Monitor-2: HDMI-A-1 model: Acer VW237Q serial: <filter> built: 2018
res: 1920x1200 dpi: 100 gamma: 1.2 size: 488x297mm (19.21x11.69")
diag: 571mm (22.5") ratio: 15:9 modes: max: 1920x1200 min: 720x400
OpenGL:
renderer: AMD DIMGREY_CAVEFISH (LLVM 13.0.1 DRM 3.44 5.17.9-1-MANJARO)
v: 4.6 Mesa 22.0.4 direct render: Yes