[UBUNTU (3.19) PATCH 0/4] i915 to call HDA on HDMI hotplug

Jerry Kao jerry.kao at canonical.com
Thu Sep 3 03:53:46 UTC 2015


+Ray

Ray will help to verify the patches with each SKL/BDW/HSW platforms.
Test result will be recorded in http://bit.ly/1ECAeth

Thanks,
Jerry

On Wed, Sep 2, 2015 at 8:12 PM, Timo Aaltonen <tjaalton at ubuntu.com> wrote:

> On 02.09.2015 15:05, David Henningsson wrote:
> >
> >
> > On 2015-09-02 13:50, Ara Pulido wrote:
> >>>> These are the bugs for your reference:
> >>>> Master bug:
> >>>> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1490895
> >>>> Dell BDW: https://bugs.launchpad.net/kittyhawk/+bug/1321986
> >>>> Dell HSW:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1383997,
> >>>> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1393701\
> >>>> HP:
> >>>>
> https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1379180
> >>>>
> >>>> Lenovo:
> >>>>
> https://bugs.launchpad.net/ubuntu/+source/linux-lts-utopic/+bug/1433891
> >>>
> >>> And the kernel to test is the +bpo2.2 kernel at
> >>> http://koti.kapsi.fi/~tjaalton/skl/
> >>>
> >>> Please make sure you do not have any ALSA DKMS installed while testing.
> >>> Thanks!
> >>>
> >>
> >> What's the scope of the testing?
> >>
> >> Just testing HDMI and DP hotplug on a SKL, a BDW and a HSW system? What
> >> kind of regression testing should we doing?
> >
> > That would be the primary test, yes. In the sound settings dialog, one
> > should see an HDMI/DP output whenever the video subsystem detects it,
> > and likewise there should not be one in case the video subsystem does
> > not detect one.
> >
> > For HSW, BDW and SKL I believe the video subsystem automatically detects
> > plug and unplug events, so then that should show up on the audio side
> > too. Having it plugged in at boot time should work as expected, too.
> >
> > In some cases, this has been more of a problem when the computer is
> > running on battery than AC, so checking both AC power and battery power
> > behaviour could be interesting.
> >
> > Regressions to be checked for (other than the specified functionality
> > not working): crashes, hangs, stack traces in dmesg.
> >
> > Thanks a lot for helping out!
>
> Note that there's an upstream bug where a slow unplug leaves the i915
> driver thinking hdmi is still plugged in:
>
> https://bugs.freedesktop.org/show_bug.cgi?id=76464
>
> but you can clear the state by just running 'xrandr' after unplug.
>
>
> --
> t
>
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