disabling "Show live previews of windows in switcher" leads to wrong mouse position while enabling it breaks "Show Desktop" hot corner

Bug #1311323 reported by Ningfei Li on 2014-04-22
This bug affects 95 people
Affects Status Importance Assigned to Milestone
compiz (Ubuntu)
Nominated for Trusty by Alberto Salvia Novella

Bug Description

A related bug report is here:
Since that one was already closed and I can't change the status of it, I report this problem here.
Also here:

compiz: 0.9.11+14.04.20140409-0ubuntu1
unity: 7.2.0+14.04.20140416-0ubuntu1

If disabling "Show live previews of windows in switcher" in ccsm (Unity Plugin --> Swither), minimize a window (let's say firefox or gedit), remaximize it. Then if I want to click somewhere or select text in the window, I have to put the mouse pointer one line above and several charactors left (compared to the real position I want) to do it.

However, if enabling "Show live previews of windows in switcher" , then you cannot use the hot corner to "Show Desktop" (ccsm-->General Options-->Key bindings-->Show Desktop). Set it to BottomLeft (any corner that's not conflict with other key bindings), with "Show live previews of windows in switcher" enabled, you can just use the hot corner to show desktop for once. Then if you check the Show Desktop setting in ccsm, it will be blank (not None but blank, nothing there). You can't use the showdesktop hot corner any more.

This problem started from 13.10 and continues now in 14.04...

Ningfei Li (ningfei) on 2014-04-22
description: updated
summary: - disabling "Show live previews of windows in switcher" leading to wrong
- mouse position while enabling it breaking "Show Desktop" hot corner
+ disabling "Show live previews of windows in switcher" leads to wrong
+ mouse position while enabling it breaks "Show Desktop" hot corner
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in compiz (Ubuntu):
status: New → Confirmed
Peter Roos (roospeteristvan) wrote :

Disabling live previews is essential for me, as with the nvidia drivers I get ugly black window contents while minimizing windows. However, this bug also affects me, causing a much greater functionality problem.

Ningfei Li (ningfei) wrote :

For me, the nvidia driver works well. I have GT650M and I installed the proprietary driver in the source (nidia-331 331.38-0ubuntu7 from the restricted channel, nvidia-setting 331.20-0ubuntu8 and nvidia prime 0.6.2 from the main channel). Before this, I also tried to install the nvidia drive sometime when I was using 13.10. But it didn't work, causing an window corruption. I think I saw somewhere that since 319.XX and later verion, nvidia driver became better, especially for dual graphic card support. Now I can use either intel card or nvidia card and swith them using nvidia-setting (with nivida-prime installed as a request) or using prime-indicator from ppa source.
But here, this problem, wrong mouse position and broken showdesktop hot corner, do exist no mather you are using nvidia card or intel card, single card or dual card...

Peter Roos (roospeteristvan) wrote :

Well, I ended up enabling the live previews (as was by default), and disabled the minimizing and unminimizing animations. This way I have a faster workflow, and don't see ugly black squares moving through my screen.

Sebastian Ilea (s3b4) wrote :

I have this bug, too in Ubuntu 14.04 64 bit, wuth Unity.

tags: added: trusty
Changed in compiz (Ubuntu):
importance: Undecided → Critical
Changed in compiz:
status: New → Confirmed
Changed in compiz (Ubuntu):
status: Confirmed → Triaged
Ongun Arısev (ongunarisev) wrote :

I also have this problem on Ubuntu 14.04 64-bıt with Unity desktop as of 13.1.2015.

Sanjeet Arora (sanjeetarrora) wrote :

Even I'm facing the same issue. My laptop has "Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)" and I'm using :-
Distributor ID: Ubuntu
Description: Ubuntu 14.04.1 LTS
Release: 14.04
Codename: trusty
64 bit

Alvaro de Lucas (alvarolucas) wrote :

Still there on 16.04 (August 2016)

valk (vkhalil) wrote :

+1 still there on 16.04

Alvaro de Lucas (alvarolucas) wrote :

+1 same problem on 16.04

Picolli (olihui) wrote :

+1 on 16.04.1 64bit
Intel 3rd Gen Core processor Graphics Controller"
Vendor: pci 0x8086 "Intel Corporation"
Device: pci 0x0166 "3rd Gen Core processor Graphics Controller"
Revision: 0x09
Driver: "i915"
Driver Modules: "drm"

Anthony Koenada (koenada) wrote :

I am also experiencing this issue. I can confirm the same issue with same results as originally described

djipey (jeanpatrick-francoia) wrote :

I'm also having this issue. Ubuntu 16.04, fresh install.

Ongun Arısev (ongunarisev) wrote :

Still present in Ubuntu 16.04 64-bit hot corners work with this setting disable, but mouse point is not correct. Is there a workaround for this?

dwilches (dwilches) wrote :

Version 17.10, bug still present. Happens randomly and only with maximized windows.
Workaround: drag your window so it is not maximized anymore, and then maximize it again.

dwilches (dwilches) wrote :

I mean Ubuntu 17.04 up here ^

nshiell (nshiell) wrote :

This bug seems similar to an issue I'm having with XUbuntu (Xfce) in VirtualBox
As I work around I can:
1. Press Crtl+Alt+F6 (to drop down to a TTY)
2. without logging in Press Ctrl+Alt+F7 (or whichever keys you need to get back into your GUI)

Issue seems to go away then

a59ff5 (a59ff5a59ff5) on 2021-03-29
Changed in compiz:
status: Confirmed → Fix Released
Changed in compiz (Ubuntu):
status: Triaged → Fix Released
Colin Watson (cjwatson) on 2021-03-29
Changed in compiz:
status: Fix Released → Confirmed
Changed in compiz (Ubuntu):
status: Fix Released → Triaged
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