nvidia 256.53 xorg-server 1.9.0 performance regression with antialiased text
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
nvidia-graphics-drivers (Ubuntu) |
Fix Released
|
High
|
Alberto Milone | ||
Maverick |
Fix Released
|
High
|
Alberto Milone |
Bug Description
I'm experiencing issues similar to the ones described at:
http://
Switching font rendering from 'Subpixel Smoothing (LCD)' to any other setting in 'Preferences -> Appearance' makes the problem go away.
ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: nvidia-current 256.53-0ubuntu1
ProcVersionSign
Uname: Linux 2.6.35-19-generic x86_64
NonfreeKernelMo
.proc.driver.
NVRM version: NVIDIA UNIX x86_64 Kernel Module 256.53 Fri Aug 27 20:27:48 PDT 2010
GCC version: gcc version 4.4.5 20100824 (prerelease) (Ubuntu/Linaro 4.4.4-9ubuntu2)
Architecture: amd64
Date: Fri Sep 3 19:49:07 2010
DkmsStatus:
nvidia-current, 256.53, 2.6.35-19-generic, x86_64: installed
bcmwl, 5.60.48.36+bdcom, 2.6.35-19-generic, x86_64: installed
bcmwl, 5.60.48.36+bdcom, 2.6.32-24-generic, x86_64: built
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
MachineType: Apple Inc. MacBookPro5,5
ProcCmdLine: BOOT_IMAGE=
ProcEnviron:
LANG=en_US.utf8
SHELL=/bin/bash
SourcePackage: nvidia-
dmi.bios.date: 06/15/09
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP55.88Z.
dmi.board.
dmi.board.name: Mac-F2268AC8
dmi.board.vendor: Apple Inc.
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.
dmi.modalias: dmi:bvnAppleInc
dmi.product.name: MacBookPro5,5
dmi.product.
dmi.sys.vendor: Apple Inc.
system:
distro: Ubuntu
codename: maverick
architecture: x86_64
kernel: 2.6.35-19-generic
Related branches
Changed in nvidia-graphics-drivers (Ubuntu): | |
importance: | Undecided → Medium |
Changed in nvidia-graphics-drivers (Ubuntu): | |
assignee: | nobody → Alberto Milone (albertomilone) |
status: | Confirmed → In Progress |
importance: | Medium → High |
Yes I can confirm there is a regression issue with xserver 1.9 (at least up to 1.9.0-0ubuntu4) and nvidia-current (at least up to 256.53).
This is most prominent when scrolling in some applications.
I have found that synaptic is a very good example of this one.
Scrolling is severely influenced there.
With xserver 1.8 branch and nvidia-current 256.44 scrolling was very fluent: xorg-video- radeon) . current_ 256.53 with xserver 1.9.
a big difference compared to xserver 1.8 branch with ati open source drivers (xserver-
Now the open source ati drivers are clearly faster than nvidia-
But, for the time being I cannot say if this is a regression in xserver 1.9 or have certain codes changed in the new xserver so much,
that nvidia drivers ought to be changed as well.
At least it seems not to be a regression in nvidia-current, because the same driver (256.44) works very well with xserver 1.8, but not with xserver 1.9 (with IgnoreABI command).