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#1 2021-07-13 17:02:59

arnuld
Member
From: INDIA
Registered: 2005-12-19
Posts: 161
Website

[SOLVED] Stuttering/Choppy/Artifacts in video playing

After a recent update, videos have been playing with lot of stutter/choppiness. Here is how video playing looks:

https://imgur.com/hETK2Ws

It does not matter whether I use VLC or mpv, it also does not matter whether I play videos in full-screen or in a small-sized screen. I have already done a pacman -Syu

Last edited by arnuld (2021-07-19 07:38:54)

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#2 2021-07-13 18:52:58

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 13,820

Re: [SOLVED] Stuttering/Choppy/Artifacts in video playing

Recent update is an useless metric, check the log, try to find packages that are likely related, like kernel updates or decoding/mesa/vaapi utilities.

Does the issue persist with HW decoding turned off? What's your graphics card? What's the rest of your system specs?

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#3 2021-07-13 19:24:54

arnuld
Member
From: INDIA
Registered: 2005-12-19
Posts: 161
Website

Re: [SOLVED] Stuttering/Choppy/Artifacts in video playing

V1del wrote:

Recent update is an useless metric, check the log, try to find packages that are likely related, like kernel updates or decoding/mesa/vaapi utilities.

Does the issue persist with HW decoding turned off? What's your graphics card? What's the rest of your system specs?

Just updated again, only Ruby language update was there. And stuttering/choppiness is gone. So can't test HW decoding on/off thing.

I have RX Vega 64 graphics card running on a B450 chipset motherboard with Ryzen 3700X. I use VAAPI.  Also, I removed mesa-vdpau to check if it helps but it did not.

Let's see if stuttering/choppiness happens again in next few days. I will keep the thread updated.

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#4 2021-07-13 19:42:51

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 13,820

Re: [SOLVED] Stuttering/Choppy/Artifacts in video playing

I'm suspecting that your stuttering session was due to your compositor/acceleration being disabled during the boot/the run where you checked this.

Which is a race condition that can and can't happen every time you boot. To lower/minimize that risk you might want to enable early KMS: https://wiki.archlinux.org/title/Kernel … _KMS_start

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#5 2021-07-14 14:59:27

arnuld
Member
From: INDIA
Registered: 2005-12-19
Posts: 161
Website

Re: [SOLVED] Stuttering/Choppy/Artifacts in video playing

I think I had some issues with KMS earlier and I changed some BIOS settings and something in Linux too. But then last week my motherboard got some problem and had to clear CMOS and then re-install GRUB after chrooting into it from a bootable flash drive and that reset all of the BIOS settings back to default and then I started getting issues. This is the current info:

[root@arch64 arnuld]# dmesg | grep -i modesetting
[    3.937329] [drm] amdgpu kernel modesetting enabled.
[    3.937821] [drm] initializing kernel modesetting (VEGA10 0x1002:0x687F 0x1043:0x04C4 0xC1).
[root@arch64 arnuld]# 

I will enable early KMS like you advised and then we see how things go


UPDATE: Problem seem to be resolved now.

Last edited by arnuld (2021-07-19 07:38:41)

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