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Bug 158014 - [PATCH] xorg-x11 lacks support for i945G integrated graphics
Summary: [PATCH] xorg-x11 lacks support for i945G integrated graphics
Alias: None
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: xorg-x11
Version: 4.0
Hardware: All
OS: Linux
Target Milestone: ---
: ---
Assignee: X/OpenGL Maintenance List
QA Contact:
Depends On:
TreeView+ depends on / blocked
Reported: 2005-05-17 20:15 UTC by wingc
Modified: 2007-11-30 22:07 UTC (History)
0 users

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2005-05-17 21:37:59 UTC
Target Upstream Version:

Attachments (Terms of Use)
[PATCH] support i945G as i915G in i810 driver, xorg-x11-6.8.2 (deleted)
2005-05-17 20:15 UTC, wingc
no flags Details | Diff

Description wingc 2005-05-17 20:15:21 UTC
Description of problem:

The i810 driver in xorg-x11-6.8.2 lacks support for the i945G integrated
graphics controller found in recent Intel-based x86_64 capable PCs. The existing
i915G code in xorg-x11 seems to work with the i945G if the appropriate PCI IDs
are added.

Version-Release number of selected component (if applicable):

Tested most recent RHEL4 beta xorg-x11 RPM (xorg-x11-6.8.2-1.EL.5)

How reproducible:


Steps to Reproduce:
1. try to set up accelerated graphics (not the vesa driver) on a machine with
i945G chipset
Actual results:

i810 driver in xorg-x11-6.8.2 does not recognize the i945G chip

Expected results:

Additional info:

Due to the way the i810/i830 driver is structured, it is not possible to use the
ChipID override in xorg.conf to fake it into thinking the i945G is a i915.
However, when the driver is patched to handle the i945G as though it is a i915G,
everything works fine.

With the attached patch I rebuilt the i810 driver in xorg-x11-6.8.2 (using the
most recent RHEL4 beta), and everything is working for me including accelerated
OpenGL on a x86_64 machine. (pre-production Dell GX620, x86_64, i945G integrated

Comment 1 wingc 2005-05-17 20:15:21 UTC
Created attachment 114479 [details]
[PATCH] support i945G as i915G in i810 driver, xorg-x11-6.8.2

Comment 2 wingc 2005-05-17 20:46:04 UTC
See also the related bugs:
bug #157991 (intel-agp driver needed on x86_64)
bug #157995 (support i945G host bridge in intel-agp driver)
bug #157997 (i915 DRM kernel module needed on x86_64)
bug #158000 (support i945G integrated graphics in i915 DRM kernel module)
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
on x86_64.

Comment 3 Mike A. Harris 2005-05-17 21:37:59 UTC

*** This bug has been marked as a duplicate of 156964 ***

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