[Ubuntu Wiki] Update of "DebuggingKernelBoot" by penalvch

[Ubuntu Wiki]

Dear Wiki user,

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

The "DebuggingKernelBoot" page has been changed by penalvch:
http://wiki.ubuntu.com/DebuggingKernelBoot?action=diff&rev1=21&rev2=22

Comment:
Due to LP#1743797 more clearly define message capturing methods.

  gfxpayload=$linux_gfx_mode}}}modify it to: {{{
  gfxpayload=text}}}
   1. Press 'Ctrl+x' to boot.
- 
- It's best if you can attach a log file which may have captured any messages you see. If you are unable to capture a log file, a video will work just as well. As a last resort you can even copy messages down by hand.
+  1. Capture messages from the bad boot and attach to your report. In order of preference:
+   * The appropriate log(s) from /var/log
+   * Video of the bad boot via cellphone or camera recording.
+   * A picture of the bad boot via cellphone or camera.
+   * Writing it down by hand.
  
  Depending on the type of error messages you encounter, there are other boot options you could try. For example, if you notice ACPI errors, try booting with the '''acpi=off''' boot option. For a full description of these options, refer to the [[https://www.kernel.org/doc/html/v4.14/admin-guide/kernel-parameters.html|kernel parameters]] document.
  
  = Boot looping or boot halts =
  
- If your boot immediately restarts, or halts, please utilize the boot debugging options and attach a video of this to your bug report.
+ If your boot immediately restarts, or halts, please utilize the boot debugging options to capture the bad boot.
  
  = Dropped into a initramfs shell =