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Hi,
I am experiencing very interesting conditions afrer update to Firefox 47.
Namely, when external screen is not connected to my laptop, the whole Firefox
interface slows down terribly (with exception to one condition: when mouse
cursor is moving).
It took me some time to pinpoint when Firefox runs okay and when not, but now I
am positive that it is directly related to presence of external screen. It
looks like the whole application updates 10x less frequently than normally. It
is visible everywhere (particulary on gifs/videos, keyboard input). The only
method to get it to run smoothly is constantly move mouse cursor (even
slightly). Then whole interface is responsive again.
I created vanilla profile to check if it's related to any extension, and I was
able to reproduce the behaviour.
HW: HP ProBook 640 G1
GPU:
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06) (prog-if 00 [VGA controller])
Kernel driver in use: i915
Kernel modules: i915
FF version: Mozilla/5.0 (X11; Linux x86_64; rv:47.0) Gecko/20100101 Firefox/47.
packages:
firefox: 47.0-1
linux: 4.6.2-1
xf86-video-intel: 1:2.99.917+662+gb617f80-1
Any ideas?
Last edited by maciejjo (2016-06-18 09:05:21)
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Start here: Menu > Applications > Settings > Display > Refresh Rate
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Try removing xf86-video-intel.
Plenty of existing threads covering this.
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slithery - it works - but won't it disable HW acceleration?
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slithery - it works - but won't it disable HW acceleration?
Expanding on slithery's answer -- The modesetting driver now works as well as or better than Intel in most situations.
Glamor handles the 2D acceleration.
Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
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How to Ask Questions the Smart Way
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