Bug 14862

Summary:	intel-agp breaks X, regression from 2.6.31
Product:	Drivers	Reporter:	Zephaniah E. Hull. (warp-spam_kernel)
Component:	Video(AGP)	Assignee:	Dave Airlie (airlied)
Status:	CLOSED DUPLICATE
Severity:	normal	CC:	rjw
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.32	Subsystem:
Regression:	Yes	Bisected commit-id:
Bug Depends on:
Bug Blocks:	14230

Description Zephaniah E. Hull. 2009-12-22 22:59:47 UTC

This has been bisected down to commit 1755168, which reworked the PCI DMI API stuff for the Intel IOMMU support.

On 2.6.32 if I disable USE_PCI_DMA_API everything works again, with it enabled I get a mouse cursor but corrupted frame buffer.

This is an HP/Compaq 6710b with GM965 integrated video, on Ubuntu 9.10.

Without this fix 2.6.32 is unusable on this hardware.
(Console works, but.)

Zephaniah E. Hull.

Comment 1 Rafael J. Wysocki 2009-12-29 21:31:28 UTC


*** This bug has been marked as a duplicate of bug 14627 ***