Re: [3.2.y] drm/i915: add Ivy Bridge GT2 Server entries

On Mon, 2012-10-01 at 03:24 -0700, Jonathan Nieder wrote:

Hi Ben,

Please consider

cc22a938fc1d drm/i915: add Ivy Bridge GT2 Server entries, 2012-03-29

for application to the 3.2.y tree. It adds a PCI id to the i915 driver, making kms work. It was applied during the 3.4-rc2 cycle, so newer stable kernels don't need it.

Maik Zumstrull tried it[1] on top of 3.2.30 and found it to work ok (thanks!).

Note that pre-2.4.34 versions of libdrm don't cope well with that card, with or without this patch:

[...]

• with this patch, and with libdrm lacking 2.4.34~22 and 2.4.38~10, X freezes at startup.

"No regressions" means you probably shouldn't take this patch without a safety to work around the old X userspace,

[...]

Then this workaround is also required in mainline. And once that's done, I can take both patches.

Ben.