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#1 2016-07-19 15:42:38

craterib
Member
Registered: 2014-05-15
Posts: 13

[SOLVED] Screen glitches only at certain places

Hi folks,

I experience glitches while playing terraria on steam. The glitches appear on and off.  When the game starts, the screen is clear with small box like glitches appearing on and off at different places. Then finally the screen becomes bad.
https://s31.postimg.org/iopmpmkln/Scree … _14_13.png

The glitches disappear and reappear on moving.

I am using NVIDIA GT218 graphics card with nouveau.

%lspci -k | grep -A 2 -E "(VGA|3D)"
01:00.0 VGA compatible controller: NVIDIA Corporation GT218 [GeForce 210] (rev a2)
    Subsystem: ASUSTeK Computer Inc. Device 852d
    Kernel driver in use: nouveau

Other applications / programs run smoothly without any problem.

I was previously using an ATI Radeon card which broke, following which I purchased this NVIDIA card.

How can I solve this?

Moderator edit [ewaller] Converted image tags for WAY over sized image to url tags. https://wiki.archlinux.org/index.php/Co … s_and_code

Last edited by craterib (2016-07-21 15:07:35)

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#2 2016-07-19 16:46:12

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 21,420

Re: [SOLVED] Screen glitches only at certain places

Well the most obvious thing to try would be to use the nvidia prop driver (you need the nvidia-340xx packages with your chipset)

If that's not what you want, do you get any error messages in the terminal that point to something like e.g. shaders failing to compile or similar?

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#3 2016-07-21 13:33:34

craterib
Member
Registered: 2014-05-15
Posts: 13

Re: [SOLVED] Screen glitches only at certain places

I launch the game from steam. So how do I get any errors from the terminal?

The `dmesg` command had the following as the last two lines:

[  505.162605] CE: hpet increased min_delta_ns to 20115 nsec
[ 1392.488068] CE: hpet increased min_delta_ns to 30172 nsec

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#4 2016-07-21 14:40:17

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 21,420

Re: [SOLVED] Screen glitches only at certain places

start steam in a terminal and then start the game, should for most intents and purposes have the same result.

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#5 2016-07-21 15:07:15

craterib
Member
Registered: 2014-05-15
Posts: 13

Re: [SOLVED] Screen glitches only at certain places

On installing nvidia proprietary drivers, the glitches disappeared.

Thanks for your help V1del

Note:

I did not have a `/ect/X11/xorg.conf` or `/etc/X11/xorg.conf.d/20-nvidia.conf` previously.

A new xorg.conf was created on running

nvidia-xconfig

.

The horizontal sync and vertical refresh rates were wrong in the generated file. I modified it to the correct values.

This may have been the cause of the problem, though I am not sure if it is.

Last edited by craterib (2016-07-21 15:15:04)

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