Left mouse button stops working in 10.10

[pawloch]

same problem - Microsoft Wireless Mouse 500 and keyboard

[ysakaed]

This also happening to my 10.10, It was working without a problem in 10.04 and after upgrade to 10.10 sometimes it stopped working after listening to music or youtube.

I thought it has something to do with upgrade so I have performed a clean reinstall. Same problem.

I am using Microsoft Wireless Desktop 3000

[ysakaed]

I found its caused by the quick media buttons on the keyboard. Once its pressed, but left button on the mouse will stopped working.

[pushkin22]

Same problem here. I installed 10.10 and some minutes later the left click stoped working, same happend while the installation. This makes 10.10 unusable...

Edit: Ok, now all buttons are dead, but I can still move the mouse. The keyboard also doesnt work properly.

Edit 2: Ok, here is the solution: Deactivating Num-Lock helps. I hate this...

[Tanshaydar]

I've installed stable release and still my mouse left button stucks.

[Iscander]

Have same problem after install stable release.
Stop left click after keyboard layout switch.

[MinionTech]

I'm having this problem as well and am using a Microsoft Arc Keyboard with a Logitech Trackball Optical.

[MinionTech]

Thanks for tracking that down! The workaround may have killed my multimedia keys, but having a working left-click is more than worth it. Hopefully we'll get a real fix sometime soon.

Is mouse from A4Tech?

Here is issue in bug tracker: https://bugs.launchpad.net/udev/+bug/637208 that also contains temporary workaround:

Some solution, that solve our problem.
1) xinput --list
It will show you your input devices, our A4Tech mouse have id, for example, there are
⎜ ↳ A4TECH USB Device id=11 [slave pointer (2)]
⎜ ↳ A4TECH USB Device id=10 [slave pointer (2)]
2) xinput set-int-prop %id% "Device Enabled" 8 0
, where %id% is one of id's of your mouse. In my case it was 10. Generally, this is the second id of list. This command will disable advanced built-in keyboard of A4Tech mouse.
If you want to enable back, use
xinput set-int-prop %id% "Device Enabled" 8 1.

Workaround works for me. My mouse is A4Tech K3-230.

[Iscander]

I noticed that the bug does not apear for a new created user.

[pbvijay]

I changed my keyborad layout from USA to usa alternative international and keyboard model to Microsoft office keyboard.
its working up to now.