Bug 104144
| Summary: | i810 DRM kernel module ignored, only user-level XFree86 i810 driver used | ||||||
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| Product: | [Retired] Red Hat Linux | Reporter: | William M. Quarles <walrus> | ||||
| Component: | XFree86 | Assignee: | Mike A. Harris <mharris> | ||||
| Status: | CLOSED WORKSFORME | QA Contact: | David Lawrence <dkl> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | 9 | CC: | mharris | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | i686 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2004-02-25 11:18:16 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
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You misunderstand how XFree86 works. DRM modules are kernel modules. The X server does not every use a kernel module. The X server loads X server modules. An X server using DRI, loads the X server module, and causes the kernel to load the kernel DRM module. In either case, the X server "user" module is always used. Intel video hardware does not support 3D acceleration in every single video mode with every single color depth. Please attach your config file, log file and /var/log/messages file from a single invocation of the X server as uncompressed individual files using bugzilla's file attachment feature below and we can investigate wether it is operating correctly, or wether you have just chosen a configuration incompatible with DRI. Created attachment 94880 [details]
The requested config file
I understand what you are saying.
I read the DRI User's Guide, which said that only 16 bit/pixel color depth is
currently supported. Resolution is irrelevant (or my resolution is less than
their user's guide's configuration sample, so I think I would be fine anyways).
So I manually changed the configuration to that. I exited and restarted X,
then entered the redhat-config-xfree86 again. The acceleration option was
still greyed out. Sounds like at this point it still isn't working.
So I manually edited the configuration again, telling it to load DRI. The
kernel module was loaded, and things seemed to be moving a little faster. I
tried starting Chromium, and the display was accelerated, but completely
garbled, I like someone took apart a puzzle making up what was displayed in the
window, and just scatterred it all near the top of monitor. Tux Racer gave
similar results. I tried commenting out the frame buffer module from the
XF86Config file, but that did not fix the error. So while the DRM modules is
now loaded and automatically used, it is not giving desired results.
Attached is a copy of my config file.
I switched the video memory back to 4 MB (manually), DRI is still loaded, the kernel module is still loaded, the mess is gone, no noticeable 3D acceleration. I would be guessing that the DRI documentation is incorrect in not specifying that something more than 16-bit/pixel depth is necessary for DRI acceleration to work. Also it would be wrong for saying that the amount of memory used for video can be modified simply by editing the config file. ping... Does this now work with information supplied and/or with upgraded packages? I have confirmed that Intel i810 video, when properly configured to 16 bit depth, with the Load "dri" module present in the config file, as configured by running: redhat-config-xfree86 --reconfig and specifying 16 bit depth, works properly in Red Hat Linux 9 on a properly updated system which includes all updates released by Red Hat to date, using the "i810" driver. Additionally, I've had other people test this and it also works properly for them as well. Most likely the problem that you are having is not a driver or XFree86 bug, but either a configuration problem on your end, or a buggy BIOS which limits memory, so that DRI will not work correctly. If you require technical assistance in order to try and resolve the configuration or BIOS issue, you may wish to subscribe to the xfree86 mailing list and seek assistance there. Closing as 'WORKSFORME' |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2.1) Gecko/20030225 Description of problem: After configuring for the i810, XFree86 does not use the DRM kernel driver, it instead uses a user-level driver that does not offer acceleration. Even if the kernel module is loaded, XFree86 ignores it. Version-Release number of selected component (if applicable): How reproducible: Always Steps to Reproduce: 1.Use redhat-config-xfree86 2. 3. Actual Results: No acceleration. Expected Results: Use of accelerated DRM kernel driver. Additional info: