Hello, I would like to know how i could disable vsync, the option to disable vsync doesn't seem to be in the settings in the compositor, I would like to disable the vsync cause it causes flickering when screen casting and it also causes flameshot to capture the wrong display which is caused by the flickering too i think. I think the reason for the flickering is caused by vsync using opengl as a rendering backend, I think this is the case because this one time i used the other rendering backend option(I forgot the name) and it fixed the flickering and the probems with flameshot, but then a few days later i noticed the flickering problem is happening again when i screen cast so then i checked the settings and i found out that the rendering backend is set to opengl once more and the option that i used for the backend is no longer there, which is why I want to disable my vsync so i no longer have to deal with the flickering and the problems that i have with flameshot
╭─johnlamuel@johnlamuel in ~
╰─λ inxi -Faz
System: Kernel: 5.14.12-zen1-1-zen x86_64 bits: 64 compiler: gcc v: 11.1.0
parameters: BOOT_IMAGE=/@/boot/vmlinuz-linux-zen root=UUID=a61de297-0025-4727-9c18-aef77fd7414d rw
rootflags=subvol=@ quiet splash rd.udev.log_priority=3 vt.global_cursor_default=0
systemd.unified_cgroup_hierarchy=1 loglevel=3
Desktop: KDE Plasma 5.23.1 tk: Qt 5.15.2 info: latte-dock wm: kwin_x11 vt: 1 dm: SDDM Distro: Garuda Linux
base: Arch Linux
Machine: Type: Laptop System: Acer product: Aspire A314-35 v: V1.09 serial: <filter>
Mobo: JSL model: Rosemary_JL v: V1.09 serial: <filter> UEFI: INSYDE v: 1.09 date: 06/22/2021
Battery: ID-1: BAT1 charge: 40.5 Wh (97.4%) condition: 41.6/41.6 Wh (100.0%) volts: 13.0 min: 11.2 model: LGC AP19B8K
type: Li-ion serial: <filter> status: Charging
CPU: Info: Quad Core model: Intel Pentium Silver N6000 bits: 64 type: MCP arch: Tremont family: 6 model-id: 9C (156)
stepping: 0 microcode: 1D cache: L2: 4 MiB
flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 8908
Speed: 2658 MHz min/max: 800/3300 MHz Core speeds (MHz): 1: 2658 2: 2794 3: 2626 4: 2897
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 and seccomp
Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer sanitization
Type: spectre_v2 mitigation: Enhanced IBRS, IBPB: conditional, RSB filling
Type: srbds status: Not affected
Type: tsx_async_abort status: Not affected
Graphics: Device-1: Intel JasperLake [UHD Graphics] vendor: Acer Incorporated ALI driver: i915 v: kernel bus-ID: 00:02.0
chip-ID: 8086:4e71 class-ID: 0300
Device-2: Quanta VGA WebCam type: USB driver: uvcvideo bus-ID: 1-4:4 chip-ID: 0408:a031 class-ID: 0e02
serial: <filter>
Display: x11 server: X.Org 1.20.13 compositor: kwin_x11 driver: loaded: intel unloaded: modesetting
alternate: fbdev,vesa display-ID: :0 screens: 1
Screen-1: 0 s-res: 1280x720 s-dpi: 96 s-size: 338x190mm (13.3x7.5") s-diag: 388mm (15.3")
Monitor-1: eDP1 res: 1280x720 hz: 60 dpi: 105 size: 310x170mm (12.2x6.7") diag: 354mm (13.9")
OpenGL: renderer: Mesa Intel UHD Graphics (JSL) v: 4.6 Mesa 21.2.4 direct render: Yes
Audio: Device-1: Intel vendor: Acer Incorporated ALI driver: snd_hda_intel v: kernel alternate: snd_sof_pci_intel_icl
bus-ID: 00:1f.3 chip-ID: 8086:4dc8 class-ID: 0403
Device-2: Intel USB PnP Sound Device type: USB driver: hid-generic,snd-usb-audio,usbhid bus-ID: 1-3:3
chip-ID: 8086:0808 class-ID: 0300
Sound Server-1: ALSA v: k5.14.12-zen1-1-zen running: yes
Sound Server-2: sndio v: N/A running: no
Sound Server-3: JACK v: 1.9.19 running: no
Sound Server-4: PulseAudio v: 15.0 running: no
Sound Server-5: PipeWire v: 0.3.38 running: yes
Network: Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet vendor: Acer Incorporated ALI driver: r8169
v: kernel port: 3000 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: Lite-On driver: ath10k_pci v: kernel
bus-ID: 02:00.0 chip-ID: 168c:0042 class-ID: 0280
IF: wlp2s0 state: up mac: <filter>
Bluetooth: Device-1: Lite-On Qualcomm Atheros QCA9377 Bluetooth type: USB driver: btusb v: 0.8 bus-ID: 1-8:5
chip-ID: 04ca:3015 class-ID: e001
Report: bt-adapter ID: hci0 rfk-id: 2 state: down bt-service: enabled,running rfk-block: hardware: no software: no
address: <filter>
Drives: Local Storage: total: 1.03 TiB used: 49.3 GiB (4.7%)
SMART Message: Unable to run smartctl. Root privileges required.
ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: SK Hynix model: HFM128GD3JX016N size: 119.24 GiB block-size:
physical: 512 B logical: 512 B speed: 31.6 Gb/s lanes: 4 type: SSD serial: <filter> rev: 41020C20 temp: 52.9 C
scheme: GPT
ID-2: /dev/sda maj-min: 8:0 vendor: Toshiba model: MQ04ABF100 size: 931.51 GiB block-size: physical: 4096 B
logical: 512 B speed: 6.0 Gb/s type: HDD rpm: 5400 serial: <filter> rev: 2J scheme: GPT
Partition: ID-1: / raw-size: 118.99 GiB size: 118.99 GiB (100.00%) used: 49.3 GiB (41.4%) fs: btrfs dev: /dev/nvme0n1p2
maj-min: 259:2
ID-2: /boot/efi raw-size: 260 MiB size: 256 MiB (98.46%) used: 562 KiB (0.2%) fs: vfat dev: /dev/nvme0n1p1
maj-min: 259:1
ID-3: /home raw-size: 118.99 GiB size: 118.99 GiB (100.00%) used: 49.3 GiB (41.4%) fs: btrfs dev: /dev/nvme0n1p2
maj-min: 259:2
ID-4: /var/log raw-size: 118.99 GiB size: 118.99 GiB (100.00%) used: 49.3 GiB (41.4%) fs: btrfs dev: /dev/nvme0n1p2
maj-min: 259:2
ID-5: /var/tmp raw-size: 118.99 GiB size: 118.99 GiB (100.00%) used: 49.3 GiB (41.4%) fs: btrfs dev: /dev/nvme0n1p2
maj-min: 259:2
Swap: Kernel: swappiness: 133 (default 60) cache-pressure: 100 (default)
ID-1: swap-1 type: zram size: 7.6 GiB used: 40 MiB (0.5%) priority: 100 dev: /dev/zram0
Sensors: System Temperatures: cpu: 57.0 C mobo: N/A
Fan Speeds (RPM): N/A
Info: Processes: 267 Uptime: 1h 9m wakeups: 1 Memory: 7.6 GiB used: 4.28 GiB (56.3%) Init: systemd v: 249 tool: systemctl
Compilers: gcc: 11.1.0 clang: 12.0.1 Packages: 2010 pacman: 2005 lib: 521 flatpak: 5 Shell: fish v: 3.3.1
default: Bash v: 5.1.8 running-in: yakuake inxi: 3.3.07
╭─johnlamuel@johnlamuel in ~ took 1s
╰─λ
Update: Problem Solved, thank you filo and u/Odzinic for the help, some notes tho on the solution for those who have the same problem:
- kwin.sh doesnt really exist on the directory specified by u/Odzinic so you have to create it yourself ( I recommend naming the sh file as kwin_env.sh as it is what is instructed in Environment Variables · Wiki · Plasma / KWin · GitLab)
- when you create the kwin_env.sh file it would probably only have read and write permissions so your probably gonna wanna make that executable as well
- if the lines of code provided by u/Odzinic doesn't work try adding export before the statements so for example if your doing "KWIN_X11_REFRESH_RATE=60000" your gonna change that to "export KWIN_X11_REFRESH_RATE=60000"
that's all folks, thanks again filo and u/Odzinic for the help
