From noreply at ubuntu.com  Mon Jan 28 21:01:59 2019
From: noreply at ubuntu.com (Ubuntu Wiki)
Date: Mon, 28 Jan 2019 21:01:59 -0000
Subject: =?utf-8?q?=5BUbuntu_Wiki=5D_Update_of_=22DebuggingKernelSuspend=22_by_pen?=
 =?utf-8?q?alvch?=
Message-ID: <20190128210159.1022.63783@mangaba.canonical.com>

Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Ubuntu Wiki" for change notification.

The "DebuggingKernelSuspend" page has been changed by penalvch:
http://wiki.ubuntu.com/DebuggingKernelSuspend?action=diff&rev1=55&rev2=56

Comment:
As per LP#1812561 add usb debug note for suspend debug.

   1. Please provide the output of the following terminal command: {{{
  cat /sys/kernel/debug/suspend_stats }}}
   1. If you have a graphics related issue after resume (corruption, display blank, etc.) please [[https://help.ubuntu.com/community/DebuggingSystemCrash#SSH|SSH]] into your machine and capture both /var/log/Xorg.0.log and /var/log/Xorg.0.log.old. Please attach each separately.
+  1. If your issue may be USB related, for example, disabling XHC1 prior to sleeping is a workaround via a terminal: {{{
+ # echo XHC1 > /proc/acpi/wakeup
+ }}} then one will want to use the following kernel boot parameter, and attach dmesg in full: {{{
+ usbcore.dyndbg=+p
+ }}}
+ 
  
  = Further reading =
  



From noreply at ubuntu.com  Wed Jan 30 10:21:43 2019
From: noreply at ubuntu.com (Ubuntu Wiki)
Date: Wed, 30 Jan 2019 10:21:43 -0000
Subject: =?utf-8?q?=5BUbuntu_Wiki=5D_Update_of_=22DebuggingTouchpadDetection=22_by?=
 =?utf-8?q?_penalvch?=
Message-ID: <20190130102143.26369.3445@mangaba.canonical.com>

Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Ubuntu Wiki" for change notification.

The "DebuggingTouchpadDetection" page has been changed by penalvch:
http://wiki.ubuntu.com/DebuggingTouchpadDetection?action=diff&rev1=40&rev2=41

Comment:
1) RM "HAL" as folks become confused thinking it is a package, and file against hal-info. 2) As per LP#1803821 et al., add note on synaptics to libinput update check.

  
  == In case your Touchpad doesn't work at all (No response from the Touchpad) ==
  
- This is generally a case of a kernel ('''linux''') or '''xorg''' bug. Check by connecting an external mouse to see if that works or not.
+ This is generally a case of a kernel ('''linux''') or '''xorg''' bug.
  
-  1. If no, then you should file the bug against '''HAL''' and follow these steps:
+  1. Check by connecting an external mouse to see if that works. If it does, then one may be affected by the transition from [[https://launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics|xserver-xorg-input-synaptics]] to [[https://launchpad.net/ubuntu/+source/xserver-xorg-input-libinput|libinput]]. Hence, one will want to check by uninstalling xserver-xorg-input-synaptics to see if this resolves the issue. If not, please see below:
    * After reading [[DebuggingTouchpadDetection/evtest|this]] about how to enter VT and log evtest events, switch to a VT using Crtl+Alt+F2 and enter the following in your terminal: {{{
  sudo evtest /dev/input/eventX > ~/evtest}}} where the "X" in "eventX" is the event number found by typing in a terminal: {{{
  cat /proc/bus/input/devices}}}