This is likely fixed in xenial then which has a later snapshot. If you
want something backported to 15.10 then feel free to bisect but until
then this stays closed
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1525207
Title:
xserver-xorg-video-intel slow perfomance, needs updating
Status in xserver-xorg-video-intel package in Ubuntu:
Fix Released
Bug description:
Laggy performance on Chromium/Electron based applications when running
maximized windows.
References/more inforation:
https://github.com/Microsoft/vscode/issues/162
https://github.com/atom/atom/issues/9724
https://code.google.com/p/chromium/issues/detail?id=514510#c37
The issue is solved by using updated drivers from this ppa:
https://launchpad.net/~oibaf/+archive/ubuntu/graphics-drivers
Or by using latest from git here:
http://cgit.freedesktop.org/xorg/driver/xf86-video-intel
Only able to reproduce on 4k resolutions and higher
Hardware specs:
Dell XPS 15-9530
Resolution 3200x1200
Intel HD Graphics 5000
Intel Core i7-4702hq
16 GB ram
SSD drive
Ubuntu 15.10, fully updated per 2015-12-11
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