graphics in ubuntu
Brian Christiansen
Hulu, in fact I am thinking of getting a 19" widescreen monitor for that
purpose. The animation used to be "smooth" (for lack of a better word).
Now it is not, you can see the screen being redrawn in sections, and
it is kinda acting like the connection is slow.
The only major change I made to the computer between then and now is
upgrading it from ubuntu 8.something (I think) to the latest, 9.04.
The animation was "smooth" before I upgraded the operating system, and
it is also smooth on a windows XP system that I also have set up.
One I can think of is resetting something, though I really don't know
what, I messed around a little with the refresh rate, but nothing I did
seemed to make any difference.
The only other thing I can think of is to back up what I want to save (I
mostly put my stuff on some zip disks I have, but there is some on the
hard drive) and totally format the disk and reinstall the 8.whatever
when it was working properly.
Brian Christiansen
J.O. Aho
> I quite often watch animation on my computer from sites like joost and
> Hulu, in fact I am thinking of getting a 19" widescreen monitor for that
> purpose. The animation used to be "smooth" (for lack of a better word).
> Now it is not, you can see the screen being redrawn in sections, and
> it is kinda acting like the connection is slow.
>
> The only major change I made to the computer between then and now is
> upgrading it from ubuntu 8.something (I think) to the latest, 9.04.
> The animation was "smooth" before I upgraded the operating system, and
> it is also smooth on a windows XP system that I also have set up.
If you have AMD or nVidia graphic card, then it could be that your closed
source driver which hasn't been installed, then you most likely will be
running on a opensource driver like VESA.
Run glxinfo and check the begining of the output to see which driver is used
for rendering 3D/OpenGL.
Also a version mismatch of kernel module and X windows libraries can cause
similar effects.
--
//Aho
Brian Christiansen
> If you have AMD or nVidia graphic card, then it could be that your closed
> source driver which hasn't been installed, then you most likely will be
> running on a opensource driver like VESA.
>
graphics, the following is the pertinent line
00:02.0 VGA compatible controller: Intel Corporation 82865G Integrated
Graphics
Controller (rev 02)
> Run glxinfo and check the begining of the output to see which driver is used
> for rendering 3D/OpenGL.
>
this is the first few lines of glxinfo, I could not figure out which is
the line that tells me the driver. I can post the whole results from
glxinfo if necessary. There seem to be linux drvivers available from
intel, but I can't figure out how to install them. The computer is a
Dell Dimension B110 that originally had XP home on it, and the only
drivers available from dell appear to be windows drivers.
name of display: :0.0
display: :0 screen: 0
direct rendering: Yes
server glx vendor string: SGI
server glx version string: 1.2
> Also a version mismatch of kernel module and X windows libraries can cause
> similar effects.
>
the kernel is easy enough to determine(ithink) : 2.6.28-15-generic
I could not really figure out how to determine what version of
X-windows I have.
Brian Christiansen
J.O. Aho
> J.O. Aho wrote:
>> If you have AMD or nVidia graphic card, then it could be that your closed
>> source driver which hasn't been installed, then you most likely will be
>> running on a opensource driver like VESA.
> I ran "lspci," and according to it, the computer uses integrated
> graphics, the following is the pertinent line
> 00:02.0 VGA compatible controller: Intel Corporation 82865G Integrated
> Graphics
> Controller (rev 02)
I have to say that I don't have much experience of intel graphics drivers, as
I have had either nVidia or AMD (back then ATi) graphics cards, the later one
only with open source drivers as that one been used on other architectures
than x86.
If I don't remember it wrong, there been from time to time some bad intel
drivers in X, check which version of X you are having and google for some
info, to see that the driver isn't broken and that you don't have some options
which may not be good with the current combination of driver/graphic.
>> Also a version mismatch of kernel module and X windows libraries can
>> cause
>> similar effects.
> the kernel is easy enough to determine(ithink) : 2.6.28-15-generic
>
> I could not really figure out how to determine what version of X-windows
> I have.
This apply only to AMD and nVidia drivers, as they ship modified X11 libraries
and a kernel module. Using the intel driver, which is just a kernel module.
--
//Aho
Brian Christiansen
> If I don't remember it wrong, there been from time to time some bad intel
> drivers in X, check which version of X you are having and google for some
> info, to see that the driver isn't broken and that you don't have some options
> which may not be good with the current combination of driver/graphic.
>
>
string is 2.1 mesa 7.4. I have no idea if either of these is the
version of X that I am running or how to determine that.
I wonder if this page might help:
https://wiki.ubuntu.com/X/Troubleshooting/IntelPerformance
J.O. Aho
> J.O. Aho wrote:
>> If I don't remember it wrong, there been from time to time some bad intel
>> drivers in X, check which version of X you are having and google for some
>> info, to see that the driver isn't broken and that you don't have some
>> options
>> which may not be good with the current combination of driver/graphic.
>>
>>
> According to GLXINFO, the glx version 1.2, and the Open GL version
> string is 2.1 mesa 7.4. I have no idea if either of these is the
> version of X that I am running or how to determine that.
It seems you are using the software opengl, with other words your opengl isn't
hardware accelerated but computed by the cpu.
> I wonder if this page might help:
> https://wiki.ubuntu.com/X/Troubleshooting/IntelPerformance
I think it can be a good idea to try to follow the steps there.
--
//Aho
Brian Christiansen
>> I wonder if this page might help:
>> https://wiki.ubuntu.com/X/Troubleshooting/IntelPerformance
>
> I think it can be a good idea to try to follow the steps there.
Following that page, it seems that I have and i865 graphics card and
that DRI is intentionally disabled due to an X freeze on boot bug
(https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/317457),
and I can't seem to find any fixes.
At this point I am not certain whether I should continue on with the
steps in this trouble shooting or reinstall my ubuntu 8.1 as my graphics
card does not seem to be supported in Ubuntu 9.04.
Brian Christiasnen
J.O. Aho
There has been quite large changes in how Xorg work between the minor version
changes and the Kernel patch versions, which can be the cause to the none-DRI
driver in 9.04 and it can be possible that in next ubuntu release (guess it
depends a bit on unstable debian) that the DRI will work again.
Just see to keep that older ubuntu up to date, so you won't get some nasty
surprises like one of our customers had with their servers during this
weekend, when their Fedora 6 machines got hacked and trashed.
--
//Aho