Hi Thomas,

Thanks for the hint.

I'm trying to rebuild the original SRPM without the patch for know, but I'm getting the following error.

rpmbuild --rebuild /tmp/clutter-1.14.4-12.el7.src.rpm ... checking for XIAllowTouchEvents... yes checking for XIScrollClassInfo.number... yes checking for XkbQueryExtension... yes checking for GDK_PIXBUF... no configure: error: Package requirements (gdk-pixbuf-2.0) were not met:

Package libpng15 was not found in the pkg-config search path. Perhaps you should add the directory containing `libpng15.pc' to the PKG_CONFIG_PATH environment variable Package 'libpng15', required by 'GdkPixbuf', not found

Consider adjusting the PKG_CONFIG_PATH environment variable if you installed software in a non-standard prefix.

Alternatively, you may set the environment variables GDK_PIXBUF_CFLAGS and GDK_PIXBUF_LIBS to avoid the need to call pkg-config. See the pkg-config man page for more details. error: Bad exit status from /var/tmp/rpm-tmp.o3QHFY (%build) ...

I've checked that libpng15.pc is in /usr/lib/pkgconfig. Tried to set PKG_CONFIG_PATH to /usr/lib/pkgconfig manually, but the error is the same.

Do you have any idea how to work this around?

Cheers, Laszlo

2015-05-15 4:15 GMT+02:00 Thomas Eriksson <thomas.eriksson@slac.stanford.edu

:

On 05/14/2015 08:36 AM, László Csontos wrote:

...

Hi Guys,

I'm facing this issue: https://bugs.centos.org/view.php?id=8482

It came after upgrading to 7.1 and only Firefox is affected, Chrome is working.

What I've tried so far:

• Tried NVIDIA drivers 340.65, 346.59 and 346.72
• Upgraded Firefox to 38
• Tried Safe more / Refresh Firefox
• Tried to turn HW accel. off in Firefox

None of these has helped to eliminate the issue.

Do you know how to work this around?

Many thanks, László

It sounds like you are experiencing this problem https://bugzilla.gnome.org/show_bug.cgi?id=724788

The fix is a two line patch that is released against clutter 1.16, but it applies cleanly against 1.14 (which is in CentOS 7, maybe this gets fixed with the upcoming Gnome rebase).

I rebuilt the clutter rpms with the patch and the flickering problem went away.

-Thomas _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

On 05/18/2015 02:00 PM, Thomas Eriksson wrote:

On 05/17/2015 11:34 PM, László Csontos wrote:

...

Hi Thomas,

Thanks for the hint.

I'm trying to rebuild the original SRPM without the patch for know, but I'm getting the following error.

rpmbuild --rebuild /tmp/clutter-1.14.4-12.el7.src.rpm ... checking for XIAllowTouchEvents... yes checking for XIScrollClassInfo.number... yes checking for XkbQueryExtension... yes checking for GDK_PIXBUF... no configure: error: Package requirements (gdk-pixbuf-2.0) were not met:

Package libpng15 was not found in the pkg-config search path. Perhaps you should add the directory containing `libpng15.pc' to the PKG_CONFIG_PATH environment variable Package 'libpng15', required by 'GdkPixbuf', not found

Consider adjusting the PKG_CONFIG_PATH environment variable if you installed software in a non-standard prefix.

Alternatively, you may set the environment variables GDK_PIXBUF_CFLAGS and GDK_PIXBUF_LIBS to avoid the need to call pkg-config. See the pkg-config man page for more details. error: Bad exit status from /var/tmp/rpm-tmp.o3QHFY (%build) ...

I've checked that libpng15.pc is in /usr/lib/pkgconfig. Tried to set PKG_CONFIG_PATH to /usr/lib/pkgconfig manually, but the error is the same.

Do you have any idea how to work this around?

Cheers, Laszlo

Hi Lazlo,

To build almost any src.rpm package you will need some *-devel packages installed. And if you are going to modify a build you need to install the src.rpm into a build area first.

http://wiki.centos.org/HowTos/SetupRpmBuildEnvironment https://fedoraproject.org/wiki/Mock?rd=Subprojects/Mock

The spec file contains a set BuildRequires statements that will be a starting point. The clutter.spec file contains these:

BuildRequires: glib2-devel mesa-libGL-devel pkgconfig pango-devel BuildRequires: cairo-gobject-devel gdk-pixbuf2-devel atk-devel BuildRequires: cogl-devel >= %{cogl_version} BuildRequires: gobject-introspection-devel >= 0.9.6 BuildRequires: gtk3-devel BuildRequires: json-glib-devel >= 0.12.0 BuildRequires: libXcomposite-devel BuildRequires: libXdamage-devel BuildRequires: libXi-devel

I am happy to build this an stick it in a non standard place where people who have this problem can get it.

I will build the new clutter and link it to your bug now.

Thanks, Johnny Hughes