** Package changed: linux (Ubuntu) => linux-raspi (Ubuntu)
** Changed in: linux-raspi (Ubuntu)
Status: Incomplete => New
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https://bugs.launchpad.net/bugs/1896167
** Tags added: raspi raspi-gfx raspi4
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Title:
Heavy screen tearing in Wayland sessions on Raspberry Pi 4-B
To manage notificat
I've read a suggestion this is fixed in later kernels like 5.9. Need to
test.
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Title:
Heavy screen tearing in Wayland sessions
It's kernel 5.10 apparently.
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Title:
Heavy screen tearing in Wayland sessions on Raspberry Pi 4-B
To manage notifications abou
I can confirm this bug.
I'm using:
- Raspberry Pi 4B 8GB
- Ubuntu 20.10 Desktop
Choosing "Ubuntu on Wayland" as Desktop at the login-screen, I can login.
- Opening "files" works (I get a normal window)
- But, opening Firefox/Gimp/etc brings up broken windows (see attachment)
** Attachment added:
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: mutter (Ubuntu)
Status: New => Confirmed
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux-raspi (Ubuntu)
Status: New => Confirmed
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Juliane,
That's not tearing, it's corruption. See bug 1896171 instead.
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Title:
Heavy screen tearing in Wayland sessions on Ras
** Summary changed:
- Heavy screen tearing in Wayland sessions on Raspberry Pi 4-B
+ Heavy screen tearing in Wayland sessions on Raspberry Pi 4-B (using the FKMS
driver)
** Description changed:
- Heavy screen tearing in Wayland sessions on Raspberry Pi 4-B.
+ Heavy screen tearing in Wayland ses
The tearing still happens in hirsute, but only when you can convince the
system to render at 60Hz. Most of the time it's stuttering (30Hz) and
not tearing.
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Seems to depend on clock frequency, just like I see with Intel graphics.
If you spin the CPU at 100% like:
while true; do true; done
then the clock frequencies increase and desktop frame rates become very
smooth. But that's also when the tearing starts.
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Seems to be fixed now using full KMS. Full KMS required both:
* Kernel >= 5.10.7
* Bug 1918110 to be fixed, which it now is.
** Package changed: mutter (Ubuntu) => flash-kernel (Ubuntu)
** Changed in: flash-kernel (Ubuntu)
Status: Triaged => Fix Released
** Changed in: linux-raspi (U
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