i915 performance error

[prytnar]

I found on foras that a lot of ubuntu laptop users found it as an error.
e.g. when using google-earth, when using windows at vmware, when playing games, even using graphic interface in gnome
They all have in common that use intel graphic card , in my case it is i915. Do You know that topic ? Should I provide more info from my conf files ?

[Andrew Ash (ash211)]

Thanks for the bug report. Could you please link to that forum topic?

What laptop are you using? Also, what performance error are you reporting? Do you think that the i915 doesn't perform well enough? Please explain more clearly what your bug is.

[Thomas Krause (krause)]

Even if this bug-report is quite old, the problem still exists.

I (intel i945gm, ubuntu feisty) had problems with software-rendering when trying to use breve (http://www.spiderland.org/breve) even when other OpenGL-apps where hardware accelerated).

There is a forum-entry (started by someone else) where this is documentated: http://www.spiderland.org/node/3261

The problem was the use of glEnable( GL_POINT_SMOOTH ) and glEnable( GL_LINE_SMOOTH ) which lead to the use of the software renderer. After deactivating these lines of code everything worked fine and fast.

The same application runs fast and hardware accelerated under Windows XP so I don't know whether this *is* supported in hardware or wether the windows-driver just ignores it.

It turned out that the programms in the mesademos package are quite a good test for certain functionality of the opengl-driver. If it helps you I could test all of these on my platform and tell what runs hardware accelerated and what not. under the i810/i915dri driver.

[Thomas Krause (krause)]

- updated package information (I don't now that much of the driver structure, but this problem hast to be somewhere there)
- I provided more info, so the "needs info" status is obsulete, at least two persons (I and the guy in the forum post) have confirmed the problem

[Thomas Krause (krause)]

Is anyone reading this bug?

[Timo Aaltonen (tjaalton)]

Please try Ubuntu 7.10 if the driver now supports those functions.

[Thomas Krause (krause)]

I'm now using Ubuntu 7.10.

The new default driver is "intel experimental" and not "i810" anymore.

Unfortunally the problem still exists. A nice test is the pointblast demo from mesa demos where you can switch point smooth on or off (I maximize the window, otherwise the software-renderer is too "fast").

Some good news in the end: there is an updated version from Breve (2.6) which resolves the problems (only!) for this application.

[Timo Aaltonen (tjaalton)]

8.04 is about to release, so please try a livecd or upgrade to see if it's fixed now :)

[Connor Imes (ckimes)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. You reported this bug a while ago and there hasn't been any activity in it recently. We were wondering is this still an issue for you? Can you try with latest Ubuntu release? Thanks in advance.

[[e-mail] (almonds256)]

I am having problems with my graphics performance and was wondering if it is the same problem as bug? I have an Intel Mobile 915GM/PM/GMS and 910GML Express. I am using Ubuntu 8.04.

Basically, everything looks ok but when I run Google Earth (etc.), it is extremely choppy. Does anyone know how to fix this or could you at least point me in the right direction?

Also, is this related to/the same as bug 247762? Thanks for your help.

[Connor Imes (ckimes)]

almonds,
If you are running compiz fusion, you should disable that before attempting to use more graphics intensive programs like Google Earth or 3D rendered videogames.
 metacity -- replace &
Then to turn on compiz again
 compiz --replace &
Otherwise please make your note on the other bug report since this one is for the i910 driver which is no longer in use I believe (uses "intel" driver instead).

[Connor Imes (ckimes)]

We are closing this bug report because it lacks the information we need to investigate the problem, as described in the previous comments. Please reopen it if you can give us the missing information, and don't hesitate to submit bug reports in the future. To reopen the bug report you can click on the current status, under the Status column, and change the Status back to "New". Thanks again!