Huh.. I've never had that problem.. What does it say when you press ESC at
the "black screen"?

On Fri, 13 Oct 2017, 17:51 Aswin Gigi, <email address hidden> wrote:

> Was trying to troubleshoot this after I got my 720 yesterday day and
> this thread was a godsend, I downloaded the latest stable kernel,
> applied the line patch and it worked perfectly. Thanks!! :D
>
> But I think one issue that I am running into is what others mentioned
> above, I have to power cycle/reboot one or more times to get the machine
> to boot into Ubuntu, otherwise I just get a black screen and it hangs. I
> think it was mentioned above that it was a problem with GRUB mostly, is
> there an easy way to fix that ?
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1700657
>
> Title:
>   Touchpad not detected in Lenovo X1 Yoga / Yoga 720-15IKB
>
> Status in Linux:
>   Unknown
> Status in linux package in Ubuntu:
>   Fix Released
> Status in linux source package in Zesty:
>   Fix Committed
>
> Bug description:
>   SRU Justification:
>   [Impact]
>   Touchpad on Lenovo X1 Yoga / Yoga 720-15IKB does not work.
>
>   [Test Case]
>   Touchpad doesn't work on the system.
>   With the patch, touchpad works.
>
>   [Regression Potential]
>   Minimal. The it adds a device ID to intel-lpss-pci, so it's limited to
>   one device.
>
>   ---
>
>   Touchpad is not automatically detected in 14.04, 16.04 or 17.04. I
>   tried in live mode and after full installation. I was able to connect
>   an external mouse and a bluetooth mouse and both worked. I checked my
>   xinput list and no sign:
>
>   ⎡ Virtual core pointer                        id=2    [master pointer
>   (3)] ⎜   ↳ Virtual core XTEST pointer                  id=4    [slave
>   pointer  (2)] ⎜   ↳ Wacom HID 50FE Finger touch                 id=12
>   [slave  pointer  (2)] ⎜   ↳ Wacom HID 50FE Pen stylus
>   id=13    [slave  pointer  (2)] ⎜   ↳ Wacom HID 50FE Pen eraser
>   id=16    [slave  pointer  (2)] ⎜   ↳ byron's trackpad
>   id=17    [slave  pointer  (2)] ⎣ Virtual core keyboard
>   id=3    [master keyboard (2)]    ↳ Virtual core XTEST keyboard
>   id=5    [slave  keyboard (3)]    ↳ Power Button
>   id=6    [slave  keyboard (3)]    ↳ Video Bus
>   id=7    [slave  keyboard (3)]    ↳ Video Bus
>   id=8    [slave  keyboard (3)]    ↳ Power Button
>   id=9    [slave  keyboard (3)]    ↳ Apple Inc. Magic Keyboard
>   id=10    [slave  keyboard (3)]    ↳ EasyCamera
>   id=11    [slave  keyboard (3)]    ↳ Ideapad extra buttons
>   id=14    [slave  keyboard (3)]    ↳ AT Translated Set 2 keyboard
>   id=15    [slave  keyboard (3)]
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 17.04
>   Package: linux-image-4.10.0-24-generic 4.10.0-24.28
>   ProcVersionSignature: Ubuntu 4.10.0-24.28-generic 4.10.15
>   Uname: Linux 4.10.0-24-generic x86_64
>   ApportVersion: 2.20.4-0ubuntu4
>   Architecture: amd64
>   AudioDevicesInUse:
>    USER        PID ACCESS COMMAND
>    /dev/snd/controlC0:  byron      1794 F.... pulseaudio
>   CurrentDesktop: Unity:Unity7
>   Date: Mon Jun 26 16:51:37 2017
>   InstallationDate: Installed on 2017-06-26 (0 days ago)
>   InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
>   MachineType: LENOVO 80X7
>   ProcFB: 0 inteldrmfb
>   ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-24-generic.efi.signed
> root=UUID=39280165-1a70-4b0d-b1fa-3b01e8bc1e25 ro quiet splash vt.handoff=7
>   RelatedPackageVersions:
>    linux-restricted-modules-4.10.0-24-generic N/A
>    linux-backports-modules-4.10.0-24-generic  N/A
>    linux-firmware                             1.164
>   SourcePackage: linux
>   UpgradeStatus: No upgrade log present (probably fresh install)
>   dmi.bios.date: 04/12/2017
>   dmi.bios.vendor: LENOVO
>   dmi.bios.version: 4MCN20WW(V1.06)
>   dmi.board.asset.tag: NO Asset Tag
>   dmi.board.name: Lenovo YOGA 720-15IKB
>   dmi.board.vendor: LENOVO
>   dmi.board.version: SDK0J40709 WIN
>   dmi.chassis.asset.tag: NO Asset Tag
>   dmi.chassis.type: 31
>   dmi.chassis.vendor: LENOVO
>   dmi.chassis.version: Lenovo YOGA 720-15IKB
>   dmi.modalias:
> dmi:bvnLENOVO:bvr4MCN20WW(V1.06):bd04/12/2017:svnLENOVO:pn80X7:pvrLenovoYOGA720-15IKB:rvnLENOVO:rnLenovoYOGA720-15IKB:rvrSDK0J40709WIN:cvnLENOVO:ct31:cvrLenovoYOGA720-15IKB:
>   dmi.product.name: 80X7
>   dmi.product.version: Lenovo YOGA 720-15IKB
>   dmi.sys.vendor: LENOVO
>
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