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Bug 157997 - i915 DRM driver missing from x86_64 kernel
Summary: i915 DRM driver missing from x86_64 kernel
Alias: None
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: kernel
Version: 4.0
Hardware: All
OS: Linux
Target Milestone: ---
: ---
Assignee: Dave Jones
QA Contact: Brian Brock
Depends On:
TreeView+ depends on / blocked
Reported: 2005-05-17 18:17 UTC by wingc
Modified: 2015-01-04 22:19 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2005-05-19 14:34:06 UTC
Target Upstream Version:

Attachments (Terms of Use)

Description wingc 2005-05-17 18:17:06 UTC
Description of problem:

Although the most recent RHEL4 beta xorg-x11 RPM contains the DRI driver
for the i915 chipset, the RHEL4 x86_64 kernel is missing the i915 kernel
module. Manufacturers are currently introducing 64-bit capable PCs with
i915 graphics hardware so the kernel should include the necessary

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

RHEL4 x86_64 kernel (2.6.9-5.0.5.EL), as well as most recent RHEL4 beta

How reproducible:


Steps to Reproduce:
1. try to set up accelerated OpenGL
2. note that the i915 kernel module is missing from the RHEL4 x86_64
Actual results:

i915 module is not there.

Expected results:

i915.ko should be there

Additional info:

The reason why the DRM module is not built is due to the following in
the kernel source:
----- drivers/char/drm/Kconfig -----
        prompt "Intel 830M, 845G, 852GM, 855GM, 865G"
        depends on DRM && AGP && AGP_INTEL
config DRM_I830
config DRM_I915

CONFIG_AGP_INTEL is currently not set for the x86_64 kernel. I created a
separate bug for this, bug #157991.

If this is resolved in a future RHEL4 release by enabling the intel-agp driver
on x86_64, then this problem will be solved. Otherwise you will need to edit
drivers/char/drm/Kconfig manually to remove the dependency on CONFIG_AGP_INTEL
so that the i915 driver will get built.

I built the i915 drm, from the standard RHEL4 kernel sources (NOT a newer i915
module from newer sources), and I can confirm that it works properly and
provides accelerated OpenGL on x86_64. (pre-production Dell GX620, with onboard
i945G graphics, x86_64)

I did not test the i830 driver on x86_64, I do not have any such hardware.

Comment 1 wingc 2005-05-17 20:44:42 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 #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
on x86_64.

Comment 4 Suzanne Hillman 2005-05-19 14:34:06 UTC
In order to file a RHEL feature request, please either contact Red Hat's
Technical Support line at 888-REDHAT-1 or file a web ticket at  Bugzilla is not an official support
channel, has no response guarantees, and may not route your request to the
correct area to assist you.  Using the official support channels above will
guarantee that your issue is handled appropriately and routed to the
individual or group which can best assist you with this issue and will also
allow Red Hat to track the issue, ensuring that any applicable feature
addition is included in all releases and is not dropped from a future update
or major release.

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