Upper left quarter of the screen becomes "unclickable"

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sebbo
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Upper left quarter of the screen becomes "unclickable"

Postby sebbo » Tue Jun 20, 2017 2:52 am

I have been searching for a solution to this for a while and hope someone knows a quick and easy fix for this :)

Every now and then my upper left corner of the screen becomes "unclickable".

Imagine you draw a horizontal line and a vertical line at the middle of the screen and then basically the upper left quarter that is created by these lines becomes non-reacting to clicks.

If an application window is "below" that quarter (or on that quarter) of the screen, i can not click any buttons or other UI elements.

At the same time i can click UI elements which are outside of this quarter.

If i move the Application to the right or down into any other part of the screen i can click UI elements that i could not click before.

It seems to me as if some other invisible Window becomes stuck at that place and it happens to be quite accurately 1/4 of the screen.

So far i only know that a restart fixes this issue. (maybe logout is enough).

I also tried to type

xfwm4 --replace

which somehow restarts my WM but that also does not help

Anyone has a clue what i could do to get rid of this or at least find the root cause why this keeps happening every few weeks?

Some info:

Code: Select all

sebastian@sebastian-VirtualBox ~ $ inxi -Fxz
System:    Host: sebastian-VirtualBox Kernel: 3.13.0-37-generic i686 (32 bit gcc: 4.8.2)
           Desktop: Xfce 4.12.2 (Gtk 2.24.23) Distro: Linux Mint 17.3 Rosa
Machine:   System: innotek (portable) product: VirtualBox v: 1.2
           Mobo: Oracle model: VirtualBox v: 1.2 Bios: innotek v: VirtualBox date: 12/01/2006
CPU:       Single core Intel Core i7-6600U (-UP-) cache: 4096 KB
           flags: (nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3) bmips: 5617 speed: 2808 MHz (max)
Graphics:  Card: InnoTek Systemberatung VirtualBox Graphics Adapter bus-ID: 00:02.0
           Display Server: X.Org 1.15.1 drivers: vboxvideo (unloaded: fbdev,vesa) Resolution: 1667x964@60.0hz
           GLX Renderer: Gallium 0.4 on llvmpipe (LLVM 3.4, 256 bits)
           GLX Version: 2.1 Mesa 10.1.3 Direct Rendering: Yes
Audio:     Card Intel 82801AA AC'97 Audio Controller driver: snd_intel8x0 ports: d100 d200 bus-ID: 00:05.0
           Sound: Advanced Linux Sound Architecture v: k3.13.0-37-generic
Network:   Card: Intel 82540EM Gigabit Ethernet Controller
           driver: e1000 v: 7.3.21-k8-NAPI port: d010 bus-ID: 00:03.0
           IF: eth0 state: up speed: 1000 Mbps duplex: full mac: <filter>
Drives:    HDD Total Size: 43.8GB (47.5% used) ID-1: /dev/sda model: VBOX_HARDDISK size: 43.8GB
Partition: ID-1: / size: 39G used: 20G (54%) fs: ext4 dev: /dev/sda1
RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors:   None detected - is lm-sensors installed and configured?
Info:      Processes: 181 Uptime: 7 days Memory: 1140.5/6057.0MB Init: Upstart runlevel: 2 Gcc sys: 4.8.4
           Client: Shell (bash 4.3.111) inxi: 2.2.28

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Fred Barclay
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Re: Upper left quarter of the screen becomes "unclickable"

Postby Fred Barclay » Thu Jun 22, 2017 8:07 pm

Is this running inside Virtualbox 1.2? If so I'd have to wonder if that isn't part of the problem right there. A lot has changed since that version of VBox was released (the current version is 5.something now), both in VBox and Linux. Using such an old version to host a modern release of Mint could very well cause weird events like what you're seeing.
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sebbo
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Re: Upper left quarter of the screen becomes "unclickable"

Postby sebbo » Tue Jun 27, 2017 4:49 am

Fred Barclay wrote:Is this running inside Virtualbox 1.2? If so I'd have to wonder if that isn't part of the problem right there. A lot has changed since that version of VBox was released (the current version is 5.something now), both in VBox and Linux. Using such an old version to host a modern release of Mint could very well cause weird events like what you're seeing.



Hi! Thanks for your answer. Sorry for the delay.

yes i'm running this inside a virtualbox.

The Virtualbox Version is (wIndows) Version 5.1.2 r108956

I had actually not noticed that there is some old "Bios" which is reported by Inxi

Code: Select all

Machine:   System: innotek (portable) product: VirtualBox v: 1.2
           Mobo: Oracle model: VirtualBox v: 1.2 Bios: innotek v: VirtualBox date: 12/01/2006


Thanks and br
seb

sebbo
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Posts: 21
Joined: Wed Mar 18, 2015 5:00 am
Location: DE

Re: Upper left quarter of the screen becomes "unclickable"

Postby sebbo » Mon Jul 17, 2017 6:58 am

And now it happened again.

I have no clue why. It happens out of the blue...

However i have another Symptom that might help troubleshooting this.

When i use the scroll wheel on the "non-clickable" Area (that is the upper left quarter), then instead of scrolling in the active window, the Workplace will be scrolled, as if i was hovering the Workplace switcher in XFCE panel

What is weird: if i scoll in the Workplace switcher - i have two workplaces - i can only scroll once up and then once down. The unwanted workplace scrolling in the upper-left-quarter is endless, means, if i scroll it scolls and continuously switches my two workplaces!

I tried to restart xfce4-panel as this was the first suspect that came to my mind, but it didn't help.

Anyone has a suggestion?

Thank you!

br
sebbo


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