[Bug 979959] Re: "gnome-control-center display" crashes if no RANDR extension
Makes sense. Besides, I've been using XFCE for a long time now, so have not had any visibility whether this bug still occurs with Gnome. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/979959 Title: "gnome-control-center display" crashes if no RANDR extension To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/979959/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 979959] Re: "gnome-control-center display" crashes if no RANDR extension
The bug hasn't seen any activity in years and there has been no recent similar reports, the code also changed quite a lot since and it's likely the issue doesn't exist anymore. Closing, feel free to open a new report if you still get problems in recent Ubuntu versions ** Changed in: gnome-control-center (Ubuntu) Status: In Progress => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/979959 Title: "gnome-control-center display" crashes if no RANDR extension To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/979959/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 979959] Re: gnome-control-center display crashes if no RANDR extension
** Changed in: gnome-control-center (Ubuntu) Status: New = In Progress ** Changed in: gnome-control-center (Ubuntu) Assignee: (unassigned) = TJ (tj) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/979959 Title: gnome-control-center display crashes if no RANDR extension To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/979959/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 979959] Re: gnome-control-center display crashes if no RANDR extension
** Branch linked: lp:~tj/ubuntu/precise/gnome-control-center/fix-979959 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/979959 Title: gnome-control-center display crashes if no RANDR extension To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/979959/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 979959] Re: gnome-control-center display crashes if no RANDR extension
I've uploaded the potential fix to my PPA for Precise. Please test and report back. https://launchpad.net/~tj/+archive/bugfixes -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/979959 Title: gnome-control-center display crashes if no RANDR extension To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/979959/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 979959] Re: gnome-control-center display crashes if no RANDR extension
The message RANDR extension is not present originates from the package
gnome-desktop3
libgnome-desktop/gnome-rr.c::gnome_rr_screen_initable_init()
if (XRRQueryExtension (dpy, event_base, ignore))
{
...
}
else
{
g_set_error (error, GNOME_RR_ERROR, GNOME_RR_ERROR_NO_RANDR_EXTENSION,
_(RANDR extension is not present));
return false;
}
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Title:
gnome-control-center display crashes if no RANDR extension
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[Bug 979959] Re: gnome-control-center display crashes if no RANDR extension
libgnome-desktop/gnome-rr.c::gnome_rr_screen_new() says:
* Returns: a unique #GnomeRRScreen instance, specific to the @screen, or NULL
* if this could not be created, for instance if the driver does not support
* Xrandr 1.2. Each #GdkScreen thus has a single instance of #GnomeRRScreen.
therefore in gnome-control-center panels/display/cc-diaply-
panel.c::cc_display_panel_constructor() the following code is incorrect:
self-priv-screen = gnome_rr_screen_new (gdk_screen_get_default (), error);
g_signal_connect (self-priv-screen, changed, G_CALLBACK
(on_screen_changed), self);
if (!self-priv-screen)
{
error_message (NULL, _(Could not get screen information),
error-message);
g_error_free (error);
if the call to gnome_rr_screen_new() returns NULL, as it will if no
RANDR is available, the subsequent setup of the signal:
g_signal_connect (self-priv-screen, changed, G_CALLBACK
(on_screen_changed), self);
is done with self-priv-screen == NULL
So when that signal fires it passes a NULL screen pointer to
on_screen_changed(). Passing the NULL pointer doesn't matter since it
isn't used in the call-back, but self-priv-screen is used:
on_screen_changed (GnomeRRScreen *scr,
gpointer data)
{
GnomeRRConfig *current;
CcDisplayPanel *self = data;
current = gnome_rr_config_new_current (self-priv-screen, NULL);
gnome_rr_config_ensure_primary (current);
So current will be NULL after calling gnome_rr_config_new_current()
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gnome-control-center display crashes if no RANDR extension
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[Bug 979959] Re: gnome-control-center display crashes if no RANDR extension
** Visibility changed to: Public -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/979959 Title: gnome-control-center display crashes if no RANDR extension To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/979959/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
