Re: [Sugar-devel] Alt-tab key does not work in F14 and sugar-emulator #2300
On Thu, 2010-10-07 at 09:52 +0200, Simon Schampijer wrote: Hi Sascha, thanks for your comments. On 10/06/2010 03:38 PM, Sascha Silbe wrote: Excerpts from Simon Schampijer's message of Wed Oct 06 15:21:29 +0200 2010: I have been bumping into [1] [...] Just to avoid confusion: This has nothing to do with how you run Sugar (i.e. it will occur both with sugar-emulator and running Sugar as a regular desktop session). It is (according to Bernie - I didn't quite grok the code) a bug in some versions of Xorg and will appear on some distro versions, independent of how you installed Sugar (native distro packages or sugar-jhbuild). It's supposed to be fixed (haven't checked myself yet) in recent Xorg versions. Bernie has also written a patch that lets metacity work around the bug. With that patch applied, metacity-message disable-keybindings works fine again. Bernie can you give some light on the issue in Xorg and where it has been fixed, if? For those tuning in just now, the testcase we're trying to fix is getting Metacity to effectively release keys such as Alt-TAB when someone executes metacity-message disable-keybindings from the command-line. This Metacity patch fixed the problem for me on Fedora 11: http://people.sugarlabs.org/bernie/patches/gnome/metacity/pending/ungrab-x-keybindings-when-they-are-disabled.patch It works by making Metacity ungrab each key individually rather than trying to ungrab them all at once with XUngrabKey(AnyKey, AnyModifier), which does not seem to work as advertised in the manpage. Right, best would be of course to get the Xorg fix in distros. Bernie might have made the metacity workaround with a good reason, though. Let's see, I hope Bernie can point us to the Xorg issue. I thought the problem had been fixed in the X server by recent commits to dix/grabs.c:DeletePassiveGrabFromList(), but apparently it's still there. Now I'm a little confused, because ungrabbing seems to work on at least some systems. I'm not sure which particular combinations of X server and Metacity can trigger it. These are the suspected functions, we still have no incriminating evidence to declare one them them definitely guilty: http://cgit.freedesktop.org/xorg/xserver/tree/dix/grabs.c#n417 http://git.gnome.org/browse/metacity/tree/src/core/keybindings.c#n737 Perhaps Peter or Owen can shred some light? -- // Bernie Innocenti - http://codewiz.org/ \X/ Sugar Labs - http://sugarlabs.org/ ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
Re: [Sugar-devel] Alt-tab key does not work in F14 and sugar-emulator #2300
Hi Sascha, thanks for your comments. On 10/06/2010 03:38 PM, Sascha Silbe wrote: Excerpts from Simon Schampijer's message of Wed Oct 06 15:21:29 +0200 2010: I have been bumping into [1] [...] Just to avoid confusion: This has nothing to do with how you run Sugar (i.e. it will occur both with sugar-emulator and running Sugar as a regular desktop session). It is (according to Bernie - I didn't quite grok the code) a bug in some versions of Xorg and will appear on some distro versions, independent of how you installed Sugar (native distro packages or sugar-jhbuild). It's supposed to be fixed (haven't checked myself yet) in recent Xorg versions. Bernie has also written a patch that lets metacity work around the bug. With that patch applied, metacity-message disable-keybindings works fine again. Bernie can you give some light on the issue in Xorg and where it has been fixed, if? ISTR somebody got in touch with the metacity maintainers to land the workaround, but don't know what got of it. To get the workaround (or an Xorg fix) into distros we will also need to report this bug to them. For Debian nobody did this so far and for Ubuntu there has been no follow-up from the reporter so the ticket is marked as Incomplete. [1] Right, best would be of course to get the Xorg fix in distros. Bernie might have made the metacity workaround with a good reason, though. Let's see, I hope Bernie can point us to the Xorg issue. Regards, Simon ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
Re: [Sugar-devel] Alt-tab key does not work in F14 and sugar-emulator #2300
Excerpts from Simon Schampijer's message of Thu Oct 07 09:52:19 +0200 2010: Bernie can you give some light on the issue in Xorg and where it has been fixed, if? See [1] for a start. Right, best would be of course to get the Xorg fix in distros. That would require someone to isolate the commit that fixed it and backport it to the Xorg versions the distros are shipping. I have no idea how much effort that would be. Sascha [1] https://lists.sugarlabs.org/private/sugar-devel/2010-September/027099.html -- http://sascha.silbe.org/ http://www.infra-silbe.de/ signature.asc Description: PGP signature ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
[Sugar-devel] Alt-tab key does not work in F14 and sugar-emulator #2300
Hi, I have been bumping into [1] and Sascha pointed out that this is likely the same issue that we see in [2]. What is the status of this? Has this been taken upstream already? Regards, Simon [1] http://bugs.sugarlabs.org/ticket/2404 [2] http://bugs.sugarlabs.org/ticket/2300 ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
Re: [Sugar-devel] Alt-tab key does not work in F14 and sugar-emulator #2300
Excerpts from Simon Schampijer's message of Wed Oct 06 15:21:29 +0200 2010: I have been bumping into [1] [...] Just to avoid confusion: This has nothing to do with how you run Sugar (i.e. it will occur both with sugar-emulator and running Sugar as a regular desktop session). It is (according to Bernie - I didn't quite grok the code) a bug in some versions of Xorg and will appear on some distro versions, independent of how you installed Sugar (native distro packages or sugar-jhbuild). It's supposed to be fixed (haven't checked myself yet) in recent Xorg versions. Bernie has also written a patch that lets metacity work around the bug. With that patch applied, metacity-message disable-keybindings works fine again. ISTR somebody got in touch with the metacity maintainers to land the workaround, but don't know what got of it. To get the workaround (or an Xorg fix) into distros we will also need to report this bug to them. For Debian nobody did this so far and for Ubuntu there has been no follow-up from the reporter so the ticket is marked as Incomplete. [1] Sascha [1] https://bugs.launchpad.net/ubuntu/+source/metacity/+bug/634415 -- http://sascha.silbe.org/ http://www.infra-silbe.de/ signature.asc Description: PGP signature ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
