Thanks Luke. Your confirmation is very helpful.
** Summary changed:
- High visual latency in 18.04 when using nouveau
+ Dell XPS 9530: Intermittent freeze when using nouveau
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Reported via ubuntu-bug -- hope this helps:
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1760341
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https://bugs.launchpad.net/bugs/1756877
Title:
High visual latency
Looks like this affects me, also using a Dell XPS 15 9530.
I can confirm seeing the following line output each time the UI hangs:
Mar 31 20:06:52 luke-ultrabook kernel: nouveau :02:00.0: bus: MMIO
write of 0002 FAULT at 4188ac [ IBUS ]
I also experience repeat input (as if I were holding
I must admit that the lag is less noticeable but it is still there and
it affects sound (with sound playback stopping for a split seconds while
playing), keyboard input (with the keys registering multiple times),
mouse (scrolling might take a second to register) and the display.
** Tags added: ker
I am not so sure but as I understand it running the nvidia driver does
not allow to use the integrated intel graphics to run and always the
higher power consumption nvidia gpu. And that is why the laptop runs the
fans all the time and is warmer because it cannot switch between the two
to minimize t
If this is just an output latency issue why would trying to write or use
a shortcut result in a key being registered as being pressed multiple
times? Example is pressing 'Ctrl' + 'T' for a new tab and opening 20
more tabs or writing 'and' and resulting in
'aand'
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.16 kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel does not fix t
Run the apport-collect command btw.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1756877
Title:
High visual latenc
apport information
** Tags added: apport-collected
** Description changed:
I am on an Dell xps 9530 laptop and I had recently cleaned installed
17.10. A few days back I decided to updated to 18.04 to check it out and
report some bugs. The most annoying bug so far is the insane amount of
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