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

[Ara Pulido]

On 03/09/15 05:53, Jerry Kao wrote:
> +Ray
> 
> Ray will help to verify the patches with each SKL/BDW/HSW platforms.
> Test result will be recorded in http://bit.ly/1ECAeth

Great, thanks Jerry.

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