Created attachment 916764 [details] Output of lshw Description of problem: I'M running thunderbird-24.6.0-1.fc20.x86_64. Sometimes (rather often, but not always) having problems with threads in thunderbird mail list subwindow: After opening a thread, all opened sublines are unvisible, until I move the mouse pointer over them (without click): then they will appear. This happens both with ati and nvidia video cards. See thread https://lists.fedoraproject.org/pipermail/users/2014-July/451632.html Version-Release number of selected component (if applicable): For example kernel-3.15.4-200.fc20.x86_64 How reproducible: Not always, but rather often Steps to Reproduce: 1.see description 2. 3. Actual results: see description Expected results: Threads are immediately visible Additional info: 1. It seems I could get rid by this effect, for example on a box with an nvidia gforce 210, by installing xorg-x11-drv-modesetting, putting the four lines Section "Device" Identifier "video0" Driver "modesetting" EndSection into /etc/X11/xorg.conf.d/00-modesetting.conf und restarting X. I did not test if this way is helpful for ati cards! 2. The effect happens too on systems for example with ati radeon SAPPHIRE HD 5450 3. lspci: 00:00.0 Host bridge: Intel Corporation 82G33/G31/P35/P31 Express DRAM Controller (rev 02) 00:01.0 PCI bridge: Intel Corporation 82G33/G31/P35/P31 Express PCI Express Root Port (rev 02) 00:1a.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 02) 00:1a.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 02) 00:1a.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 02) 00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 02) 00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 02) 00:1c.4 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 5 (rev 02) 00:1c.5 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 6 (rev 02) 00:1d.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 02) 00:1d.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 02) 00:1d.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 02) 00:1d.3 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 02) 00:1d.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 02) 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 92) 00:1f.0 ISA bridge: Intel Corporation 82801IR (ICH9R) LPC Interface Controller (rev 02) 00:1f.2 IDE interface: Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 4 port SATA Controller [IDE mode] (rev 02) 00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 02) 00:1f.5 IDE interface: Intel Corporation 82801I (ICH9 Family) 2 port SATA Controller [IDE mode] (rev 02) 01:00.0 VGA compatible controller: NVIDIA Corporation GT218 [GeForce 210] (rev a2) 01:00.1 Audio device: NVIDIA Corporation High Definition Audio Controller (rev a1) 03:00.0 IDE interface: Marvell Technology Group Ltd. 88SE6121 SATA II / PATA Controller (rev b2) 04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 01)
*********** MASS BUG UPDATE ************** We apologize for the inconvenience. There is a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 20 kernel bugs. Fedora 20 has now been rebased to 3.17.2-200.fc20. Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel. If you have moved on to Fedora 21, and are still experiencing this issue, please change the version to Fedora 21. If you experience different issues, please open a new bug report for those.
(In reply to Justin M. Forbes from comment #1) > *********** MASS BUG UPDATE ************** > > We apologize for the inconvenience. There is a large number of bugs to go > through and several of them have gone stale. Due to this, we are doing a > mass bug update across all of the Fedora 20 kernel bugs. > > Fedora 20 has now been rebased to 3.17.2-200.fc20. Please test this kernel > update (or newer) and let us know if you issue has been resolved or if it is > still present with the newer kernel. > > If you have moved on to Fedora 21, and are still experiencing this issue, > please change the version to Fedora 21. > > If you experience different issues, please open a new bug report for those. I'm running indeed F21 and actually thunderbird-31.2.0-1.fc21.x86_64, and I see no more the effect I described above. So ist seems it's resolved. From my point of view, BZ 1117817 may be closed. Kind regards Joachim Backes