OS: 5.15.0-52-generic #58~20.04.1-Ubuntu
TB: 102.10.0
Nvidia Quadro 1000M
Intel Core i7-2760QM
16 GB RAM
Same issue here plus time outs w/ 100% CPU utilization for approx. 20 sec.
I noticed that the above mentioned paramter is gone (gfx...force-disabled) from
the configuration. Reintroducing
** Summary changed:
- [upstream] Very high CPU and slow responsiveness in Thunderbird 91
+ [upstream] Very high CPU and slow responsiveness in Thunderbird 91-102
** Description changed:
- Very high CPU and slow responsiveness in Thunderbird 91.5.0. Just moving
- the mouse cursor over a message
I am also seeing the same behaviour. Previously I just disabled the
WebRender as well (since that made the difference in being not laggy),
just to make Thunderbird useable. Here is my profile when moving the
mouse over the messages: https://share.firefox.dev/3CCIknA
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I now discovered, that webrender is disabled by default in Firefox 101
on Ubuntu. So the question is, why it is enabled by default in
Thunderbird.
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From another side I got the hint, that miss-configured (web)rendering could be
the source of the problem and cause lots of time spent in error logging. See:
https://bugzilla.mozilla.org/show_bug.cgi?id=1772673#c11
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I'm having similar problems in 1:91.10.0+build1-0ubuntu0.20.04.1 with
Thunderbird's CPU usage well over 25 % and for long periods and
additionally causing root process Xorg to consume 15 % CPU.
See also: https://bugzilla.mozilla.org/show_bug.cgi?id=1772673
The workaround for me is:
If I revert the above settings then the problem gets even worse. So it
seems we might have multiple different 100% CPU bugs now.
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I'm having similar problems again in 1:91.9.1+build1-0ubuntu0.20.04.1
with Thunderbird's CPU usage well over 100% and long periods of not
responding since the update.
But the fix for the original problem is still active:
gfx.webrender.all = false
gfx.webrender.force-disabled = true
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You
I have
Ubuntu 22.04 LTS,
8GB RAM,
i5 4-Core Intel CPU,
SSD,
It's a Laptop.
I am facing same issue, I have installed Thunderbird 91.8.0 (64-bit),
and the CPU usage is high and the interface is not responsive, the
cursor lags, feels heavy while using.
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** Summary changed:
- [upstream] Very high CPU and slow responsiveness in Thunderbird 91.5.0
+ [upstream] Very high CPU and slow responsiveness in Thunderbird 91
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