Red Hat Bugzilla – Bug 157995
[PATCH] intel-agp driver does not support i945G chipset
Last modified: 2012-06-20 12:11:57 EDT
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
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