Bug 488411

Summary:	Qt4 apps randomly & occasionally dropping key presses
Product:	[Fedora] Fedora	Reporter:	Mark Summerfield <mark>
Component:	qt	Assignee:	Than Ngo <than>
Status:	CLOSED DUPLICATE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	low
Version:	10	CC:	kevin, rdieter, than
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2009-03-05 08:23:41 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Mark Summerfield 2009-03-04 07:37:22 UTC

I updated my system yesterday; I don't know if the Qt libraries were updated or maybe it was X11 stuff, but when I rebooted today I discovered that apps that use the Qt4 libraries, e.g., KMail, are "randomly" ignoring keypresses. For example, I write a mail and that all works but when I go to press Ctrl+Enter to send it, nothing happens. Then I try Alt+M,S but the Message menu won't pop-up. But then the next mail I send all the keypresses are accepted and everything works fine. I had the same effect in another Qt4 app (one of my own).

I don't know what can be done about it since the effect is so random. Maybe other people will notice and a pattern will emerge?

BTW I use GNOME as my window system, something KMail in particular doesn't seem over happy about.

Comment 1 Mark Summerfield 2009-03-04 07:44:28 UTC

Actually, it isn't as occasional as I first thought. KMail in particular is virtually unusable from the keyboard (which means unusable for me) because it just keeps ignoring keypresses. So maybe it is a KMail-specific problem (since it doesn't seem to be affecting other Qt4 apps at the moment)?

Comment 2 Kevin Kofler 2009-03-04 07:44:47 UTC

What version of Fedora are you using? Please fill in the version of Fedora, not Qt, under the "Version:" field.

Comment 3 Mark Summerfield 2009-03-04 07:57:32 UTC

Sorry, I'm using Fedora 10. (Although I know that from memory, don't know where Fedora actually says which version it is.)

And the problem is not with Fedora's Qt. I just built an app with my own local version of Qt and I have the same problem, only worse since practically all keypresses are being ignored. So maybe the problem is with a recent change in X11 or its drivers?

Comment 4 Kevin Kofler 2009-03-04 08:05:53 UTC

Hmmm, maybe the updated xorg-x11-drv-evdev?

Comment 5 Mark Summerfield 2009-03-04 10:49:07 UTC

Is there a way I can back out of that update to see if that's it?

Comment 6 Kevin Kofler 2009-03-04 12:37:35 UTC

Looks like the actual offender may be libgxim, see:
https://bugzilla.redhat.com/show_bug.cgi?id=488223
https://admin.fedoraproject.org/updates/libgxim-0.3.2-4.fc10

Comment 7 Mark Summerfield 2009-03-04 12:47:46 UTC

I'm not convinced. I use GNOME terminal and have no problems with it at all. Nor do I have problems with Firefox or other non-Qt4 apps.

Comment 8 Mark Summerfield 2009-03-05 08:23:41 UTC

I just did a yum update and got the new libgxim & rebooted. So far none of yesterday's problems have occurred, so I'll mark the bug as closed.
Thanks!

Comment 9 Kevin Kofler 2009-03-07 23:10:51 UTC


*** This bug has been marked as a duplicate of bug 488223 ***