Created attachment 148862 [details] Video of bug Some elements flicker when hovering the mouse over them and the tooltip does not display. Elements affected include thumbnails on main LibreOffice window, all buttons, some (but not all) checkboxes/radios in the configuration menus. Note, the bug is not shown when doing a screencast, so I have attached a video recorded on my phone. This bug appeared in KDE when upgrading Kubuntu from 18.04 to 18.10. It only happens to me in KDE, not in Gnome or Unity desktop environments. Here is what didn't work: - Deleting my LibreOffice config directory - Using a completely new user profile - Turning off compositing in KDE - Turning on/off OpenGL in LibreOffice This bug is similar to https://bugs.documentfoundation.org/show_bug.cgi?id=93120, however I don't think they are the same. This one happens even when not moving the mouse, the flickering is super fast, and this affects KDE instead of Windows. Here is my hardware and software information: mike@mike-home:~$ uname -a Linux mike-home 4.18.0-13-generic #14-Ubuntu SMP Wed Dec 5 09:04:24 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux mike@mike-home:~$ libreoffice --version LibreOffice 6.1.4.2 10(Build:2) mike@mike-home:~$ sudo lshw mike-home description: Desktop Computer product: To Be Filled By O.E.M. (To Be Filled By O.E.M.) vendor: To Be Filled By O.E.M. version: To Be Filled By O.E.M. serial: To Be Filled By O.E.M. width: 64 bits capabilities: smbios-2.7 dmi-2.7 smp vsyscall32 configuration: boot=normal chassis=desktop family=To Be Filled By O.E.M. sku=To Be Filled By O.E.M. uuid=00020003-0004-0005-0006-000700080009 *-core description: Motherboard product: FM2A55M-VG3+ vendor: ASRock physical id: 0 serial: M80-3B004602308 *-firmware description: BIOS vendor: American Megatrends Inc. physical id: 0 version: P2.20 date: 02/11/2015 size: 64KiB capacity: 8128KiB capabilities: pci upgrade shadowing cdboot bootselect socketedrom edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer acpi usb biosbootspecification uefi *-cache:0 description: L1 cache physical id: 7 slot: L1 CACHE size: 96KiB capacity: 96KiB clock: 1GHz (1.0ns) capabilities: pipeline-burst internal write-back unified configuration: level=1 *-cache:1 description: L2 cache physical id: 8 slot: L2 CACHE size: 1MiB capacity: 1MiB clock: 1GHz (1.0ns) capabilities: pipeline-burst internal write-back unified configuration: level=2 *-memory description: System Memory physical id: f slot: System board or motherboard size: 8GiB *-bank:0 description: DIMM DDR3 Synchronous Unbuffered (Unregistered) 1333 MHz (0.8 ns) product: DMT451E6AFR8C-H9 vendor: Hynix/Hyundai physical id: 0 serial: 321A6435 slot: DIMM 0 size: 4GiB width: 64 bits clock: 1333MHz (0.8ns) *-bank:1 description: DIMM DDR3 Synchronous Unbuffered (Unregistered) 1333 MHz (0.8 ns) product: DMT451E6AFR8C-H9 vendor: Hynix/Hyundai physical id: 1 serial: 3621DBD7 slot: DIMM 0 size: 4GiB width: 64 bits clock: 1333MHz (0.8ns) *-cpu description: CPU product: AMD A4-4000 APU with Radeon(tm) HD Graphics vendor: Advanced Micro Devices [AMD] physical id: 17 bus info: cpu@0 version: AMD A4-4000 APU with Radeon(tm) HD Graphics slot: CPUSocket size: 2994MHz capacity: 3GHz width: 64 bits clock: 100MHz capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core perfctr_nb cpb hw_pstate ssbd vmmcall bmi1 arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold cpufreq configuration: cores=2 enabledcores=2 threads=2 *-pci:0 description: Host bridge product: Family 15h (Models 10h-1fh) Processor Root Complex vendor: Advanced Micro Devices, Inc. [AMD] physical id: 100 bus info: pci@0000:00:00.0 version: 00 width: 32 bits clock: 66MHz *-display description: VGA compatible controller product: Trinity [Radeon HD 7480D] vendor: Advanced Micro Devices, Inc. [AMD/ATI] physical id: 1 bus info: pci@0000:00:01.0 version: 00 width: 32 bits clock: 33MHz capabilities: pm pciexpress msi vga_controller bus_master cap_list rom configuration: driver=radeon latency=0 resources: irq:27 memory:c0000000-cfffffff ioport:f000(size=256) memory:ff700000-ff73ffff memory:c0000-dffff *-pci:0 description: PCI bridge product: Family 15h (Models 10h-1fh) Processor Root Port vendor: Advanced Micro Devices, Inc. [AMD] physical id: 4 bus info: pci@0000:00:04.0 version: 00 width: 32 bits clock: 33MHz capabilities: pci pm pciexpress msi ht normal_decode bus_master cap_list configuration: driver=pcieport resources: irq:24 ioport:e000(size=4096) memory:ff600000-ff6fffff ioport:d0000000(size=1048576) *-network description: Ethernet interface product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:01:00.0 logical name: enp1s0 version: 0b serial: bc:5f:f4:f3:08:c4 size: 1Gbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168f-2_0.0.4 03/27/12 ip=192.168.100.5 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s resources: irq:16 ioport:e000(size=256) memory:ff600000-ff600fff memory:d0000000-d0003fff *-storage description: SATA controller product: FCH SATA Controller [AHCI mode] vendor: Advanced Micro Devices, Inc. [AMD] physical id: 11 bus info: pci@0000:00:11.0 version: 40 width: 32 bits clock: 66MHz capabilities: storage msi ahci_1.0 bus_master cap_list configuration: driver=ahci latency=32 resources: irq:25 ioport:f190(size=8) ioport:f180(size=4) ioport:f170(size=8) ioport:f160(size=4) ioport:f150(size=16) memory:ff74b000-ff74b7ff *-usb:0 description: USB controller product: FCH USB OHCI Controller vendor: Advanced Micro Devices, Inc. [AMD] physical id: 12 bus info: pci@0000:00:12.0 version: 11 width: 32 bits clock: 66MHz capabilities: ohci bus_master configuration: driver=ohci-pci latency=32 resources: irq:18 memory:ff74a000-ff74afff *-usb:1 description: USB controller product: FCH USB EHCI Controller vendor: Advanced Micro Devices, Inc. [AMD] physical id: 12.2 bus info: pci@0000:00:12.2 version: 11 width: 32 bits clock: 66MHz capabilities: pm debug ehci bus_master cap_list configuration: driver=ehci-pci latency=32 resources: irq:17 memory:ff749000-ff7490ff *-usb:2 description: USB controller product: FCH USB OHCI Controller vendor: Advanced Micro Devices, Inc. [AMD] physical id: 13 bus info: pci@0000:00:13.0 version: 11 width: 32 bits clock: 66MHz capabilities: ohci bus_master configuration: driver=ohci-pci latency=32 resources: irq:18 memory:ff748000-ff748fff *-usb:3 description: USB controller product: FCH USB EHCI Controller vendor: Advanced Micro Devices, Inc. [AMD] physical id: 13.2 bus info: pci@0000:00:13.2 version: 11 width: 32 bits clock: 66MHz capabilities: pm debug ehci bus_master cap_list configuration: driver=ehci-pci latency=32 resources: irq:17 memory:ff747000-ff7470ff *-serial description: SMBus product: FCH SMBus Controller vendor: Advanced Micro Devices, Inc. [AMD] physical id: 14 bus info: pci@0000:00:14.0 version: 14 width: 32 bits clock: 66MHz configuration: driver=piix4_smbus latency=0 resources: irq:0 *-ide description: IDE interface product: FCH IDE Controller vendor: Advanced Micro Devices, Inc. [AMD] physical id: 14.1 bus info: pci@0000:00:14.1 version: 00 width: 32 bits clock: 66MHz capabilities: ide isa_compatibility_mode_controller__supports_both_channels_switched_to_pci_native_mode__supports_bus_mastering bus_master configuration: driver=pata_atiixp latency=32 resources: irq:17 ioport:1f0(size=8) ioport:3f6 ioport:170(size=8) ioport:376 ioport:f100(size=16) *-multimedia description: Audio device product: FCH Azalia Controller vendor: Advanced Micro Devices, Inc. [AMD] physical id: 14.2 bus info: pci@0000:00:14.2 version: 01 width: 64 bits clock: 33MHz capabilities: pm bus_master cap_list configuration: driver=snd_hda_intel latency=32 resources: irq:16 memory:ff740000-ff743fff *-isa description: ISA bridge product: FCH LPC Bridge vendor: Advanced Micro Devices, Inc. [AMD] physical id: 14.3 bus info: pci@0000:00:14.3 version: 11 width: 32 bits clock: 66MHz capabilities: isa bus_master configuration: latency=0 *-pci:1 description: PCI bridge product: FCH PCI Bridge vendor: Advanced Micro Devices, Inc. [AMD] physical id: 14.4 bus info: pci@0000:00:14.4 version: 40 width: 32 bits clock: 66MHz capabilities: pci subtractive_decode bus_master vga_palette *-usb:4 description: USB controller product: FCH USB OHCI Controller vendor: Advanced Micro Devices, Inc. [AMD] physical id: 14.5 bus info: pci@0000:00:14.5 version: 11 width: 32 bits clock: 66MHz capabilities: ohci bus_master configuration: driver=ohci-pci latency=32 resources: irq:18 memory:ff746000-ff746fff *-usb:5 description: USB controller product: FCH USB OHCI Controller vendor: Advanced Micro Devices, Inc. [AMD] physical id: 16 bus info: pci@0000:00:16.0 version: 11 width: 32 bits clock: 66MHz capabilities: ohci bus_master configuration: driver=ohci-pci latency=32 resources: irq:18 memory:ff745000-ff745fff *-usb:6 description: USB controller product: FCH USB EHCI Controller vendor: Advanced Micro Devices, Inc. [AMD] physical id: 16.2 bus info: pci@0000:00:16.2 version: 11 width: 32 bits clock: 66MHz capabilities: pm debug ehci bus_master cap_list configuration: driver=ehci-pci latency=32 resources: irq:17 memory:ff744000-ff7440ff *-pci:1 description: Host bridge product: Family 15h (Models 10h-1fh) Processor Function 0 vendor: Advanced Micro Devices, Inc. [AMD] physical id: 101 bus info: pci@0000:00:18.0 version: 00 width: 32 bits clock: 33MHz *-pci:2 description: Host bridge product: Family 15h (Models 10h-1fh) Processor Function 1 vendor: Advanced Micro Devices, Inc. [AMD] physical id: 102 bus info: pci@0000:00:18.1 version: 00 width: 32 bits clock: 33MHz *-pci:3 description: Host bridge product: Family 15h (Models 10h-1fh) Processor Function 2 vendor: Advanced Micro Devices, Inc. [AMD] physical id: 103 bus info: pci@0000:00:18.2 version: 00 width: 32 bits clock: 33MHz *-pci:4 description: Host bridge product: Family 15h (Models 10h-1fh) Processor Function 3 vendor: Advanced Micro Devices, Inc. [AMD] physical id: 104 bus info: pci@0000:00:18.3 version: 00 width: 32 bits clock: 33MHz configuration: driver=k10temp resources: irq:0 *-pci:5 description: Host bridge product: Family 15h (Models 10h-1fh) Processor Function 4 vendor: Advanced Micro Devices, Inc. [AMD] physical id: 105 bus info: pci@0000:00:18.4 version: 00 width: 32 bits clock: 33MHz *-pci:6 description: Host bridge product: Family 15h (Models 10h-1fh) Processor Function 5 vendor: Advanced Micro Devices, Inc. [AMD] physical id: 106 bus info: pci@0000:00:18.5 version: 00 width: 32 bits clock: 33MHz *-scsi physical id: 1 logical name: scsi1 capabilities: emulated *-disk description: ATA Disk product: Hitachi HUA72201 vendor: Hitachi physical id: 0.0.0 bus info: scsi@1:0.0.0 logical name: /dev/sda version: A3EA serial: JPW9H0N01BYUDV size: 931GiB (1TB) capabilities: gpt-1.00 partitioned partitioned:gpt configuration: ansiversion=5 guid=4c4ce682-3564-41ef-ac6b-00db082676ee logicalsectorsize=512 sectorsize=512 *-volume:0 description: Windows FAT volume vendor: mkfs.fat physical id: 1 bus info: scsi@1:0.0.0,1 logical name: /dev/sda1 logical name: /boot/efi version: FAT32 serial: b042-c287 size: 729MiB capacity: 730MiB capabilities: boot fat initialized configuration: FATs=2 filesystem=fat mount.fstype=vfat mount.options=rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro state=mounted *-volume:1 description: LVM Physical Volume vendor: Linux physical id: 3 bus info: scsi@1:0.0.0,3 logical name: /dev/sda3 serial: cNXDt7-EewW-DT2H-EZjv-oUkD-xnf9-Ul80ru size: 930GiB capabilities: multi lvm2 mike@mike-home:~$ lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 2 On-line CPU(s) list: 0,1 Thread(s) per core: 2 Core(s) per socket: 1 Socket(s): 1 NUMA node(s): 1 Vendor ID: AuthenticAMD CPU family: 21 Model: 19 Model name: AMD A4-4000 APU with Radeon(tm) HD Graphics Stepping: 1 CPU MHz: 1796.335 CPU max MHz: 3000.0000 CPU min MHz: 1400.0000 BogoMIPS: 5989.10 Virtualization: AMD-V L1d cache: 16K L1i cache: 64K L2 cache: 1024K NUMA node0 CPU(s): 0,1 Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core perfctr_nb cpb hw_pstate ssbd vmmcall bmi1 arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold mike@mike-home:~$ lspci 00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Root Complex 00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Trinity [Radeon HD 7480D] 00:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Root Port 00:11.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 40) 00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI Controller (rev 11) 00:12.2 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller (rev 11) 00:13.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI Controller (rev 11) 00:13.2 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller (rev 11) 00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 14) 00:14.1 IDE interface: Advanced Micro Devices, Inc. [AMD] FCH IDE Controller 00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD] FCH Azalia Controller (rev 01) 00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 11) 00:14.4 PCI bridge: Advanced Micro Devices, Inc. [AMD] FCH PCI Bridge (rev 40) 00:14.5 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI Controller (rev 11) 00:16.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI Controller (rev 11) 00:16.2 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller (rev 11) 00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Function 0 00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Function 1 00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Function 2 00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Function 3 00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Function 4 00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 10h-1fh) Processor Function 5 01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0b)
It seems that Ubuntu 18.10 still has gtk3 of version 3.24.1, in which case it's a duplicate of Bug 121361. Look at Bug 121361 comment 3 for a workaround (or somehow update your gtk3 version to the latest). *** This bug has been marked as a duplicate of bug 121361 ***
(In reply to Maxim Monastirsky from comment #1) > It seems that Ubuntu 18.10 still has gtk3 of version 3.24.1, in which case > it's a duplicate of Bug 121361. Look at Bug 121361 comment 3 for a > workaround (or somehow update your gtk3 version to the latest). > > *** This bug has been marked as a duplicate of bug 121361 *** Thank you. The workaround worked.