Bug 2517

Summary:	XVideo disabled
Product:	xorg	Reporter:	Lenny G. Arbage <alengarbage>
Component:	Driver/intel	Assignee:	Xorg Project Team <xorg-team>
Status:	RESOLVED NOTABUG	QA Contact:
Severity:	normal
Priority:	high
Version:	6.8.1
Hardware:	x86 (IA32)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Lenny G. Arbage 2005-02-09 22:43:53 UTC

Is the following expected?  XVideo reliant applications give a blue screen.

(II) I810(0): Display plane A is enabled and connected to Pipe A.
(II) I810(0): Display plane B is disabled and connected to Pipe B.
(II) I810(0): Enabling plane A.
(II) I810(0): Display plane A is now enabled and connected to Pipe A.
(II) I810(0): Display plane B is now disabled and connected to Pipe B.
(II) I810(0): PIPEACONF is 0xc0000000
(II) I810(0): PIPEBCONF is 0x80000000
(II) I810(0): Mode bandwidth is 115 Mpixel/s
(WW) I810(0): Extended BIOS function 0x5f28 not supported.
(WW) I810(0): Extended BIOS function 0x5f61 not supported.
(WW) I810(0): Disabling XVideo output because Pipe A is in double-wide mode.


lspci shows:

00:02.0 VGA compatible controller: Intel Corp. 82915G Express Chipset Family
Graphics Controller (rev 04)

Comment 1 Lenny G. Arbage 2005-02-09 22:52:04 UTC

I just discovered that xvinfo claims the maximum size for XVideo is less than
1600x1200, the resolution I was using.  If I drop down to 1280x1024, xv seems to
work just fine.

Is this a limitation of my hardware, my configuration, or the driver?

Comment 2 Alex Deucher 2005-02-10 09:30:34 UTC

(In reply to comment #1)
> I just discovered that xvinfo claims the maximum size for XVideo is less than
> 1600x1200, the resolution I was using.  If I drop down to 1280x1024, xv seems to
> work just fine.
> 
> Is this a limitation of my hardware, my configuration, or the driver?

This is a hardware limitation.  There isn't enough bandwidth available to use
the overlay in modes above 1280x1024.

Comment 3 Alan Hourihane 2005-02-11 08:37:22 UTC

Correct. It's bandwidth limitation of the chip. Closing this bug.

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