[Bug 88797] New: i915 driver isn't used for Broadwell-U GPU in Lenovo Helix 2

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=88797

            Bug ID: 88797
           Summary: i915 driver isn't used for Broadwell-U GPU in Lenovo
                    Helix 2
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: andrew at etc.gen.nz
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org,
                    rodrigo.vivi at gmail.com

Created attachment 112827
  --> https://bugs.freedesktop.org/attachment.cgi?id=112827&action=edit
dmesg output with drm.debug=0xe

[Recreated here from https://bugzilla.kernel.org/show_bug.cgi?id=91601 at
request of Rodrigo Vivi]

A new Lenovo Helix 2 laptop we have isn't working correctly, the Intel
Broadwell-U chipset isn't detected by the kernel so DRM (and then X) isn't
using it.

I am running Debian Jessie with a 3.18 kernel.

Relevent lspci output:

00:02.0 VGA compatible controller [0300]: Intel Corporation Broadwell-U
Integrated Graphics [8086:161e] (rev 08)

To have the system boot I need to set acpi=off (I've tried acpi=ht and various
other settings). If acpi is enabled then the last message displayed is the Grub
messages. With acpi off, I can't use the screen or login remotely.

I expect that acpi is actually the issue, as if I try to manually insert the
i915 module I get this in the dmesg output:

[  143.242134] i915: Unknown symbol acpi_lid_notifier_register (err 0)
[  143.244330] i915: Unknown symbol acpi_lid_notifier_unregister (err 0)
[  143.245648] i915: Unknown symbol acpi_lid_open (err 0)

The laptop is running firmware v1.42 released 2015/01/15.

Full dmesg out (with drm.debug=0xe) and Xorg.0.log is attached.

If there is any further info I can gather please let me know.

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20150126/23148fd6/attachment.html>