Re: [Intel-gfx] Intel graphics drm issue?
From: Mark Hounschell
Date: Sun Oct 14 2012 - 07:40:10 EST
On 10/14/2012 07:26 AM, Daniel Vetter wrote:
On Sun, Oct 14, 2012 at 12:20 PM, Mark Hounschell <dmarkh@xxxxxxxxxx> wrote:
Hi Daniel,
cat /proc/cmdline
root=/dev/disk/by-id/ata-INTEL_SSDSC2CW060A3_CVCV205106EB060AGN-part4
video=1024x768 noresume splash=silent quiet apm=off nomodeset vga=normal
drm.debug=0xe
dmesg is attached
From the dmesg:
[ 1.833195] [drm:drm_pci_agp_init] *ERROR* Cannot initialize the
agpgart module.
Which is the root-cause preventing i915.ko from loading. Now with 3.7
we /shouldn't/ all that agp crap any longer on snb/ivb, so I'm a bit
confused why it still tries to initialize it. Can you maybe attach
your .config?
Did you mean 3.6 above? I used 3.6.2? If I'm using the right kernel I will
apply the patch and try. Let me know.
Also, we need to employ some dirty runtime tricks to no longer require
agp on newer chips, since we still need to keep it around for
backwards-compat with old userspace on old chips. Can you please check
with the below diff whether this hack works?
Thanks, Daniel
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index a7837e5..1152502 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -842,6 +842,7 @@ i915_pci_probe(struct pci_dev *pdev, const struct
pci_device_id *ent)
if (intel_info->gen != 3) {
driver.driver_features &=
~(DRIVER_USE_AGP | DRIVER_REQUIRE_AGP);
+ printk("dropping agp requirement\n");
} else if (!intel_agp_enabled) {
DRM_ERROR("drm/i915 can't work without intel_agp module!\n");
return -ENODEV;
Doesn't this patch only add a printk? Is that what you want me to do?
Mark
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