Bug 485823 - intel kms breaks Xv
intel kms breaks Xv
Product: Fedora
Classification: Fedora
Component: xorg-x11-drv-i810 (Show other bugs)
All Linux
low Severity medium
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Assigned To: Kristian Høgsberg
Fedora Extras Quality Assurance
Depends On:
Blocks: IntelKMS
  Show dependency treegraph
Reported: 2009-02-16 16:13 EST by Bill Nottingham
Modified: 2014-03-16 23:17 EDT (History)
5 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2009-02-27 15:32:16 EST
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Regression: ---
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Documentation: ---
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
X log (21.56 KB, application/octet-stream)
2009-02-19 19:31 EST, Bill Nottingham
no flags Details

  None (edit)
Description Bill Nottingham 2009-02-16 16:13:35 EST
Description of problem:

After loading the intel KMS support with 'modprobe i915 modeset=1', Xv no longer works.

[notting@nostromo: ~]$ xvinfo 
X-Video Extension version 2.2
screen #0
 no adaptors present

The relevant portion of the log appears to be:

(II) intel(0): [DRI2] Setup complete
(**) intel(0): Kernel mode setting active, disabling FBC.
(**) intel(0): Framebuffer compression disabled
(**) intel(0): Tiling enabled
(==) intel(0): VideoRam: -1 KB
(II) intel(0): Attempting memory allocation with tiled buffers.
(II) intel(0): Tiled allocation successful.
(WW) intel(0): Disabling Xv because the overlay register buffer allocation failed.

00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)

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


How reproducible:

Well, only booted once so far, but there's no reason to think it isn't repeatable.

Steps to Reproduce:
1. Load modesetting driver
2. Start X
3. Attempt to use Xv
Actual results:


Expected results:

Comment 1 Matěj Cepl 2009-02-16 18:07:22 EST
I still believe that /var/log/Xorg.0.log would be useful.
Comment 2 Kristian Høgsberg 2009-02-17 09:23:32 EST
(In reply to comment #1)
> I still believe that /var/log/Xorg.0.log would be useful.

No, it's ok, I'll take it from here - thanks.
Comment 3 Kristian Høgsberg 2009-02-17 09:24:48 EST
Remove needinfo.
Comment 4 Kristian Høgsberg 2009-02-18 18:08:33 EST
xorg-x11-drv-i810-2_6_0-6_fc11 should bring back the textured xv adaptor.
Comment 5 Bill Nottingham 2009-02-19 19:31:39 EST
Created attachment 332657 [details]
X log


It still fails.

X-Video Extension version 2.2
screen #0
 no adaptors present
Comment 6 Michael Monreal 2009-02-20 10:30:30 EST
What is the "correct" way to enable KMS for Intel?

I tries "options i915 modeset=1" in one of the modprobe.d/ files but with that, X never really draws anything after boot and I cannot switch to a VT either...
Comment 7 Bill Nottingham 2009-02-20 10:37:40 EST
With kernel >= 0.122, it should be enabled by default. Otherwise, you have to load i915 with modeset=1 before starting X.
Comment 8 Bill Nottingham 2009-02-27 15:32:16 EST


it works now again.

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