missing pixels (horizontal lines) in font rendering
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
xserver-xorg-video-intel (Fedora) |
New
|
Undecided
|
Unassigned | ||
xserver-xorg-video-intel (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned |
Bug Description
Binary package hint: xserver-
Since upgrading from Lucid to Natty, font rendering in firefox and some other apps is buggy. Certain letters in certain fonts will be missing pixels from horizontal lines through certain letters. For instance, in the screenshot I'm about to attach from this bug report, all the 'o' characters are missing a line through the center, and 'n' are missing a line a little below center. It's different every time: if I restart firefox, different letters will be affected.
Graphics is Intel 915GM (on a Sony Vaio TX650). I don't know that it's the X driver at fault, but most people who see the problem seem to think that it's related to the video driver rather than the font rendering libraries. Changing my set of installed fonts or changing to a different default browser font can make the problem better or worse, but never makes it go away entirely.
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xserver-
ProcVersionSign
Uname: Linux 2.6.38-8-generic i686
Architecture: i386
CompizPlugins: No value set for `/apps/
CompositorRunning: None
DRM.card0.LVDS.1:
status: connected
enabled: enabled
dpms: On
modes: 1366x768
edid-base64:
DRM.card0.VGA.1:
status: disconnected
enabled: disabled
dpms: Off
modes:
edid-base64:
Date: Sat May 14 18:16:31 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
GraphicsCard:
Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller [8086:2592] (rev 03) (prog-if 00 [VGA controller])
Subsystem: Sony Corporation Device [104d:81e2]
Subsystem: Sony Corporation Device [104d:81e2]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110413)
MachineType: Sony Corporation VGN-TX650P
PccardctlIdent:
Socket 0:
no product info available
PccardctlStatus:
Socket 0:
no card
ProcEnviron:
LC_COLLATE=C
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/tcsh
ProcKernelCmdLine: root=/dev/sda5 ro noplymouth
Renderer: Unknown
SourcePackage: xserver-
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/05/2005
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: R0031V1
dmi.chassis.type: 10
dmi.modalias: dmi:bvnPhoenixT
dmi.product.name: VGN-TX650P
dmi.product.
dmi.sys.vendor: Sony Corporation
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.
version.
version.
version.
version.
version.
version.
tags: | removed: regression-update |
I have the very same problem, after upgrading to 11.04 from lts, on a Toshiba Portege with the following controller:
> lspci | grep Display
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)
I don't know if this can help: when zooming in or out the problem usually disappears (it seems to be related to font size)