Description of problem:
The intel-agp driver does not support the i945G host bridge found in recent
Intel-based x86_64 capable PCs. The existing i915G code in the RHEL4 kernel
seems capable of driving the i945G if the appropriate PCI IDs are added.
Version-Release number of selected component (if applicable):
Tested on most recent RHEL4 beta kernel (2.6.9-6.37.EL)
Steps to Reproduce:
1. try to get agpgart working on a i945G based machine
intel-agp driver does not recognize the i945G.
Attached is a patch against the most recent RHEL4 beta sources (2.6.9-6.37.EL)
which adds the i945G PCI IDs and just uses the existing i915G code in
intel-agp.c. Using this patch, I built the intel-agp driver as a standalone
module for x86_64. I can confirm that with this patch, OpenGL is working
properly on my hardware (pre-production Dell GX620, x86_64, with onboard i945G
Created attachment 114476 [details]
[PATCH] support i945G as i915G in intel-agp.c
See also the related bugs:
bug #157991 (intel-agp driver needed on x86_64)
bug #157997 (i915 DRM kernel module needed on x86_64)
bug #158000 (support i945G integrated graphics in i915 DRM kernel module)
bug #158014 (support i945G integrated graphics in xorg-x11 i810 driver)
bug #158015 (support i945G integrated graphics in i915 DRI driver)
bug #158016 (disable debugging output to stderr in i915 DRI driver, x86_64)
Taken as a series, when these are all resolved it will be possible to get
working OpenGL acceleration in RHEL4 for the i945G integrated graphics chipset
reassigning to product management
Thank you for submitting this issue for consideration in Red Hat Enterprise Linux. The release for which you requested us to review is now End of Life.
Please See https://access.redhat.com/support/policy/updates/errata/
If you would like Red Hat to re-consider your feature request for an active release, please re-open the request via appropriate support channels and provide additional supporting details about the importance of this issue.