FS#48490 - [xfce4-session] font rendering bug: partial disappearing after screen unlock
Attached to Project:
Arch Linux
Opened by Ilya Dashevsky (evolucia) - Monday, 07 March 2016, 10:41 GMT
Last edited by Evangelos Foutras (foutrelis) - Tuesday, 27 June 2017, 03:50 GMT
Opened by Ilya Dashevsky (evolucia) - Monday, 07 March 2016, 10:41 GMT
Last edited by Evangelos Foutras (foutrelis) - Tuesday, 27 June 2017, 03:50 GMT
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Details
Xfce4: font rendering bug: partial disappearing after screen
unlock
Description: Using last update, Desktop: Xfce4. After lock screen (reproduced with light-locker and xlockmore) font from almost all apps failed to render correctly. Majority of letter disappears, and may return after text-selecting. Additional info: * Packages: last xfce4, last light-locker, last greybird theme and elementary icon set. Steps to reproduce: 1. Lock screen. 2. Unlock screen. Issue is reproduced systematically but not after each unlock |
This task depends upon
Closed by Evangelos Foutras (foutrelis)
Tuesday, 27 June 2017, 03:50 GMT
Reason for closing: None
Additional comments about closing: Assuming it was an Intel bug and that it has been fixed in the past year or so.
Tuesday, 27 June 2017, 03:50 GMT
Reason for closing: None
Additional comments about closing: Assuming it was an Intel bug and that it has been fixed in the past year or so.
Edit: and what video drivers?
Also, don't just say "last" for a version, as that changes all of the time.
Packages versions
xfce4: 4.12.3-1
xfce-theme-greybird: 1.6.2-2
elementary-xfce-icons: 0.7-1
I switched to Adwaita theme and began to observe the issue.
Result of "lspci -v" for VGA section:
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) (prog-if 00 [VGA controller])
Subsystem: Acer Incorporated [ALI] Device 0688
Flags: bus master, fast devsel, latency 0, IRQ 29
Memory at c2000000 (64-bit, non-prefetchable) [size=4M]
Memory at b0000000 (64-bit, prefetchable) [size=256M]
I/O ports at 4000 [size=64]
Expansion ROM at <unassigned> [disabled]
Capabilities: <access denied>
Kernel driver in use: i915
Kernel modules: i915
Discovered a new detail: The issue was reproduced after notebook has been in sleep mode all night.
New screenshot attached.
It might have something to do with font rendering cache (if such thing exists?), because over time, many characters become visible again.
lspci -v:
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device 5006
Flags: bus master, fast devsel, latency 0, IRQ 31
Memory at f0000000 (64-bit, non-prefetchable) [size=4M]
Memory at e0000000 (64-bit, prefetchable) [size=256M]
I/O ports at 4000 [size=64]
Expansion ROM at <unassigned> [disabled]
Capabilities: <access denied>
Kernel driver in use: i915
Kernel modules: i915
https://01.org/linuxgraphics/documentation/how-report-bugs
Section "Device"
Identifier "Intel Graphics"
Driver "intel"
Option "AccelMethod" "uxa"
However, after a short time of using the fix, font and theme colors started messing up instead, giving me problems pictured on the screeenshots.
screen2.png (37 KiB)
Detail: the problem is reproduced only after a long stay in sleep mode (more then 30 minutes).
Maybe it is hardware defect?
https://bugs.freedesktop.org/show_bug.cgi?id=88584
https://bugs.freedesktop.org/show_bug.cgi?id=93886
Also found section "Font and screen corruption in GTK+ applications (missing glyphs after suspend/resume)" in our wiki:
https://wiki.archlinux.org/index.php/Intel_graphics
create file /etc/X11/xorg.conf.d/20-intel.conf with content below:
Section "Device"
Identifier "Intel Graphics"
Driver "intel"
Option "AccelMethod" "uxa"
EndSection