Scrolling Issue


I had this problem when using Lubuntu 19 and lived with it, knowing that I would be installing version 20 this year and assuming it was just a bug that would be cleared up in the next LTS. But it is still there.

When I am scrolling a web page in Firefox the lines of text seem to ripple horizontally, almost like there is ridge in the screen, but of course there isn’t.

I’d like to know what causes this, and if there is a simple fix for it as it can make quite uncomfortable viewing.

Many thanks.

Firstly there is no Lubuntu 19, as Lubuntu is a desktop release and uses the release format; having more than a single release per year (as do server releases). Ubuntu has specialist snap based releases that do use yy, but Lubuntu uses debs as it’s base packaging system as all releases do.

It sounds like you’re talking about screen tearing, which if I’m right, will require knowledge of your video hardware at a minimum. It relates to the kernel module (driver) used by the linux kernel, and my goto command to get this detail is sudo lshw -C video (list hardware of class video) You can find the kernel module in use looking for the “driver=”.

Once this is known you have clues to find the configuration file, where a ‘tear’ flag may be set to fix the issue, or other options explored. I’ll provide another ~recent query related to tearing on this site for clues as to what I’m thinking. (it may not relate exactly unless you have the same hardware, but with module details you’ll know what to look for).

I’ve had similar issue, running compton, fixed it.

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Hi guys, thanks for responding.
I have tried running compton as that seemed the easiest option (I’m not very technically -minded), but it doesn’t seem to have helped. In fact it might be worse.

I ran the line of code guiverc suggested and got the following:

description: VGA compatible controller
product: HD Graphics 620
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 02
width: 64 bits
clock: 33MHz
capabilities: pciexpress msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:128 memory:ee000000-eeffffff memory:d0000000-dfffffff ioport:f000(size=64) memory:c0000-dffff

Looking at the Archlinux post in the linked to topic I managed to find the x11/xorg.conf.d file, but that’s where the similarity ended. I saw nothing about drivers.

Any further help would be appreciated. :confused:

Does the issue only show up in Firefox? If so, try changing the setting for Use hardware acceleration when available in Firefox.

You can find this setting in PreferencesGeneralPerformance.

Hi, Although the tearing does seem to be only affecting FireFox, the suggestion from Thomas-N does not help resolve it.

I’ve had another look at the archlinux post and I don’t understand any of it well enough to know where to start.

I may have to put up with it again, it’s only really intrusive when scrolling at speed or on heavily worded pages. A lot o f tearing issues seem to relate to video playback, which is something I don’t do much but I will check it out in case it helps.

I’ve found a fix for the problem! :smiley:
It seems that others have had problems with tearing while scrolling in FireFox, and a solution has been posted here:

And it works!

Thanks to all of you who have replied with suggestions, I appreciate it. :smiley: :clinking_glasses:


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