When I switch to use the on-demand function (using the command sudo prime-select on-demand), the KDE animations render at literally 1 FPS, unless I change the Rendering backend option to XRender.
It works fine with Intel or Nvidia (performance mode) is enabled.
Is there a way to fix this?
Thanks.
System info summary:
- Distro: Ubuntu 21.10 (Impish Indri)
- Kernel: 5.13.0-20-lowlatency x86_64
- Desktop: KDE Plasma 5.22.5
- Nvidia Driver Version: 470.74
- CUDA Version: 11.4
The output of the inxi -Fazy command:
System: Kernel: 5.13.0-20-lowlatency x86_64 bits: 64 compiler: gcc v: 11.2.0 parameters: BOOT_IMAGE=/boot/vmlinuz-5.13.0-20-lowlatency root=UUID=726a12dd-9d6a-4cdb-9186-ac454f33546f ro threadirqs quiet splash vt.handoff=1 Desktop: KDE Plasma 5.22.5 tk: Qt 5.15.2 wm: kwin_x11 vt: 1 dm: SDDM Distro: Ubuntu 21.10 (Impish Indri)
Machine: Type: Laptop System: LENOVO product: 80TU v: Lenovo ideapad 310-14IKB serial: <filter> Chassis: type: 10 v: Lenovo ideapad 310-14IKB serial: <filter> Mobo: LENOVO model: Torronto 4C2 v: NO DPK serial: <filter> UEFI: LENOVO v: 3JCN21WW date: 09/23/2016
Battery: ID-1: BAT0 charge: 21.0 Wh (100.0%) condition: 21.0/30.0 Wh (70.1%) volts: 8.5 min: 7.4 model: SMP L15M2PB2 type: Li-poly serial: <filter> status: Full
CPU: Info: Dual Core model: Intel Core i7-7500U bits: 64 type: MT MCP arch: Amber/Kaby Lake note: check family: 6 model-id: 8E (142) stepping: 9 microcode: EA cache: L2: 4 MiB flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 23199 Speed: 600 MHz min/max: 400/3500 MHz Core speeds (MHz): 1: 600 2: 618 3: 700 4: 623 Vulnerabilities: Type: itlb_multihit status: KVM: VMX disabled Type: l1tf mitigation: PTE Inversion; VMX: conditional cache flushes, SMT vulnerable Type: mds mitigation: Clear CPU buffers; SMT vulnerable Type: meltdown mitigation: PTI Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via prctl and seccomp Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer sanitization Type: spectre_v2 mitigation: Full generic retpoline, IBPB: conditional, IBRS_FW, STIBP: conditional, RSB filling Type: srbds mitigation: Microcode Type: tsx_async_abort status: Not affected
Graphics: Device-1: Intel HD Graphics 620 vendor: Lenovo driver: i915 v: kernel bus-ID: 00:02.0 chip-ID: 8086:5916 class-ID: 0300 Device-2: NVIDIA GM108M [GeForce 920MX] vendor: Lenovo driver: nvidia v: 470.74 alternate: nvidiafb,nouveau,nvidia_drm bus-ID: 03:00.0 chip-ID: 10de:134f class-ID: 0302 Device-3: Chicony EasyCamera type: USB driver: uvcvideo bus-ID: 1-4:4 chip-ID: 04f2:b57d class-ID: 0e02 serial: <filter> Display: x11 server: X.Org 1.20.13 compositor: kwin_x11 driver: loaded: modesetting,nvidia unloaded: fbdev,nouveau,vesa display-ID: :0 screens: 1 Screen-1: 0 s-res: 3286x1080 s-dpi: 96 s-size: 867x285mm (34.1x11.2") s-diag: 913mm (35.9") Monitor-1: eDP-1 res: 1366x768 hz: 60 dpi: 112 size: 309x173mm (12.2x6.8") diag: 354mm (13.9") Monitor-2: DP-1 res: 1920x1080 hz: 60 dpi: 36 size: 1360x768mm (53.5x30.2") diag: 1562mm (61.5") OpenGL: renderer: Mesa Intel HD Graphics 620 (KBL GT2) v: 4.6 Mesa 21.2.2 direct render: Yes
Audio: Device-1: Intel Sunrise Point-LP HD Audio vendor: Lenovo driver: snd_hda_intel v: kernel alternate: snd_soc_skl bus-ID: 00:1f.3 chip-ID: 8086:9d71 class-ID: 0403 Sound Server-1: ALSA v: k5.13.0-20-lowlatency running: yes Sound Server-2: JACK v: 1.9.19 running: no Sound Server-3: PulseAudio v: 15.0 running: yes Sound Server-4: PipeWire v: 0.3.32 running: yes
Network: Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet vendor: Lenovo driver: r8169 v: kernel port: 4000 bus-ID: 01:00.0 chip-ID: 10ec:8168 class-ID: 0200 IF: enp1s0 state: down mac: <filter> Device-2: Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter vendor: Lenovo driver: ath10k_pci v: kernel port: 4000 bus-ID: 02:00.0 chip-ID: 168c:0042 class-ID: 0280 IF: wlp2s0 state: up mac: <filter>
Bluetooth: Device-1: Qualcomm Atheros type: USB driver: btusb v: 0.8 bus-ID: 1-7:6 chip-ID: 0cf3:e500 class-ID: e001 Report: hciconfig ID: hci0 rfk-id: 2 state: down bt-service: enabled,running rfk-block: hardware: no software: yes address: <filter> Info: acl-mtu: 1024:8 sco-mtu: 50:8 link-policy: rswitch hold sniff link-mode: slave accept
Drives: Local Storage: total: 372.62 GiB used: 243.56 GiB (65.4%) ID-1: /dev/sda maj-min: 8:0 vendor: Kingston model: SA400S37240G size: 223.57 GiB block-size: physical: 512 B logical: 512 B speed: 6.0 Gb/s type: SSD serial: <filter> rev: 0102 scheme: GPT SMART Message: Unknown smartctl error. Unable to generate data. ID-2: /dev/sdb maj-min: 8:16 vendor: Seagate model: ST9160412AS size: 149.05 GiB block-size: physical: 512 B logical: 512 B speed: 3.0 Gb/s type: HDD rpm: 7200 serial: <filter> rev: HPM1 scheme: MBR SMART Message: Unknown smartctl error. Unable to generate data.
Partition: ID-1: / raw-size: 223.27 GiB size: 218.71 GiB (97.96%) used: 145.27 GiB (66.4%) fs: ext4 block-size: 4096 B dev: /dev/sda2 maj-min: 8:2 ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%) used: 5.9 MiB (2.0%) fs: vfat block-size: 512 B dev: /dev/sda1 maj-min: 8:1
