Bug 93388

Summary:	[i965, regression, bisection] MESA_FORMAT_B8G8R8X8_SRGB changes break kwin
Product:	Mesa	Reporter:	Mike Lothian <mike>
Component:	Drivers/DRI/i965	Assignee:	Ian Romanick <idr>
Status:	RESOLVED FIXED	QA Contact:	Intel 3D Bugs Mailing List <intel-3d-bugs>
Severity:	normal
Priority:	medium	CC:	kolAflash, mike, nroberts
Version:	git
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Mike Lothian 2015-12-15 17:27:49 UTC

Since the 3 patches were added:

i965: Use MESA_FORMAT_B8G8R8X8_SRGB for RGB visuals
i965: Add B8G8R8X8_SRGB to the alpha format override
i965: Add MESA_FORMAT_B8G8R8X8_SRGB to brw_format_for_mesa_format

Kwin no longer starts correctly on my Skylake system with FW5.17 & Plasma 5.5

I can still see the console and the mouse renders and I can see a popup telling me the wifi has connected. If I disable compositing I can logon, but opening the compositor settings the control panel segfaults in i965_drv.so

Going back to the previous commit before these patches solves the issue for me

Please let me know if you'd like any more details or logs

Comment 1 Mike Lothian 2015-12-16 10:05:52 UTC

Just to be clear I only need to revert 839793680f99b8387bee9489733d5071c10f3ace

Comment 2 Christoph Haag 2015-12-16 14:35:45 UTC

See also bug 92759, comment 13

Comment 3 Neil Roberts 2015-12-16 14:56:23 UTC

I've sent a revert for the patch because it looks like it's not going to be trivial to fix properly and this bug is worse than the original bug it was fixing.

http://patchwork.freedesktop.org/patch/68408/

Comment 4 Neil Roberts 2015-12-16 17:37:53 UTC

I've pushed the revert.

http://cgit.freedesktop.org/mesa/mesa/commit/?id=61cdb7665f7bd147533cdc5

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