Tela piscando com drivers NVIDIA

Question

Recentemente, configurei minha própria instalação do Arch linux. Estou tendo alguns problemas com um dos monitores em minha configuração de monitor duplo. De vez em quando, aparentemente ao acaso, meu monitor fica preto por um segundo antes de atualizar. Isso é muito frustrante. Acontece apenas com um dos meus monitores, o outro monitor não é afetado. Eu tentei todo tipo de coisa e li muitas postagens no fórum, mas não consigo corrigir esse problema.

Estou rodando o driver nvidia-450, com uma GTX 1080 TI. O monitor com problemas está conectado na porta de exibição e é um monitor de 2k. O outro monitor também está conectado via displayport e é um monitor 1080p.

Aqui estão algumas saídas de comando que podem ajudar, editadas para seções relevantes:

lspci - k

08:00.0 VGA compatible controller: NVIDIA Corporation GP102 [GeForce GTX 1080 Ti] (rev a1)
    Subsystem: Gigabyte Technology Co., Ltd Device 374c
    Kernel driver in use: nvidia
    Kernel modules: nouveau, nvidia_drm, nvidia

dmesg

[    5.896505] nvidia-modeset: Loading NVIDIA Kernel Mode Setting Driver for UNIX platforms  450.66  Wed Aug 12 19:37:58 UTC 2020
[    5.947554] [drm] [nvidia-drm] [GPU ID 0x00000800] Loading driver
[    5.947559] [drm] Initialized nvidia-drm 0.0.0 20160202 for 0000:08:00.0 on minor 0
[    6.031959] audit: type=1130 audit(1598214227.195:21): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=nvidia-persistenced comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[    6.034669] usb 1-5: set resolution quirk: cval->res = 384
[    6.034934] uvcvideo: Found UVC 1.00 device <unnamed> (046d:0825)
[    6.119775] uvcvideo 1-5:1.0: Entity type for entity Extension 4 was not initialized!
[    6.119779] uvcvideo 1-5:1.0: Entity type for entity Extension 6 was not initialized!
[    6.119781] uvcvideo 1-5:1.0: Entity type for entity Extension 7 was not initialized!
[    6.119783] uvcvideo 1-5:1.0: Entity type for entity Processing 2 was not initialized!
[    6.119785] uvcvideo 1-5:1.0: Entity type for entity Extension 3 was not initialized!
[    6.119787] uvcvideo 1-5:1.0: Entity type for entity Camera 1 was not initialized!
[    6.119882] input: UVC Camera (046d:0825) as /devices/pci0000:00/0000:00:01.3/0000:01:00.0/usb1/1-5/1-5:1.0/input/input32
[    6.119971] usbcore: registered new interface driver uvcvideo
[    6.119972] USB Video Class driver (1.1.1)
[    6.135659] usbcore: registered new interface driver snd-usb-audio
[    7.092020] audit: type=1103 audit(1598214228.255:22): pid=541 uid=0 auid=4294967295 ses=4294967295 msg='op=PAM:setcred grantors=pam_env,pam_permit acct="lightdm" exe="/usr/bin/lightdm" hostname=? addr=? terminal=:0 res=success'
[    7.114373] audit: type=1130 audit(1598214228.278:23): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=user-runtime-dir@976 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[    7.124372] audit: type=1101 audit(1598214228.288:24): pid=545 uid=0 auid=4294967295 ses=4294967295 msg='op=PAM:accounting grantors=pam_access,pam_unix,pam_permit,pam_time acct="lightdm" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[    7.124392] audit: type=1103 audit(1598214228.288:25): pid=545 uid=0 auid=4294967295 ses=4294967295 msg='op=PAM:setcred grantors=? acct="lightdm" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=failed'
[    7.124425] audit: type=1006 audit(1598214228.288:26): pid=545 uid=0 old-auid=4294967295 auid=976 tty=(none) old-ses=4294967295 ses=1 res=1
[    7.743903] igb 0000:06:00.0 enp6s0: igb: enp6s0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX
[    7.956953] IPv6: ADDRCONF(NETDEV_CHANGE): enp6s0: link becomes ready
[    9.320055] usb 5-4: device descriptor read/64, error -110
[   24.893783] usb 5-4: device descriptor read/64, error -110
[   25.123356] usb 5-4: new high-speed USB device number 4 using xhci_hcd
[   30.440070] usb 5-4: device descriptor read/64, error -110
[   46.013782] usb 5-4: device descriptor read/64, error -110
[   46.120071] usb usb5-port4: attempt power cycle
[   46.763345] usb 5-4: new high-speed USB device number 5 using xhci_hcd
[   51.863777] xhci_hcd 0000:09:00.3: Timeout while waiting for setup device command
[   57.197078] xhci_hcd 0000:09:00.3: Timeout while waiting for setup device command
[   57.403701] usb 5-4: device not accepting address 5, error -62
[   57.526684] usb 5-4: new high-speed USB device number 6 using xhci_hcd
[   62.530134] xhci_hcd 0000:09:00.3: Timeout while waiting for setup device command
[   67.863370] xhci_hcd 0000:09:00.3: Timeout while waiting for setup device command
[   68.070345] usb 5-4: device not accepting address 6, error -62
[   68.070416] usb usb5-port4: unable to enumerate USB device
[   71.757209] kauditd_printk_skb: 5 callbacks suppressed

Deixe-me saber se você precisar de mais informações. Esse problema tem me deixado louco.

Answer 1

Acontece que meu problema de oscilação de tela foi causado pelo meu compositor: picom. Resolvi esse problema alterando meu back-end de glx para xrender em meu arquivo de configuração picom.