[Bug 567955] Re: grub2 always adds "memtest86 serial console" even when no serial port

The Loeki the.loeki at gmail.com
Thu Sep 4 16:46:35 UTC 2014


As a related comment, the serial port is *always* ttyS0, even when it's
not there, and even when both GRUB2 itself and the kernel are all
configured to go to, say ttyS1 or something completely else.

I propose to modify /etc/grub.d/20_memtest86+

* Look at /sys/class/tty/ ; if there's nothing in there that's not virtual (there should be a good way to weed out the virtual devices by looking at this), skip the serial port config
* AND/OR look at GRUB2/the kernel; if they're not configured for serial communication, why should you for memtest?


** Bug watch added: Debian Bug tracker #612371
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=612371

** Also affects: memtest86+ via
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=612371
   Importance: Unknown
       Status: Unknown

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to memtest86+ in Ubuntu.
https://bugs.launchpad.net/bugs/567955

Title:
  grub2 always adds "memtest86 serial console" even when no serial port

Status in Memtest86+:
  Unknown
Status in “memtest86+” package in Ubuntu:
  Triaged
Status in Baltix GNU/Linux:
  New

Bug description:
  Binary package hint: grub2

  I have a laptop that does not and will never have an ordinary serial
  port.

  Yet grub2 insists on adding the memory test for serial console that
  WILL NEVER WORK!.

  There appears to be no way to disable this.

  For some reason nodes are created in /dev for ttyS0 through ttyS3, but
  there is no underlying device.  stty will return error, as will "cat".
  They are like a hanging symlink.

To manage notifications about this bug go to:
https://bugs.launchpad.net/memtest86+/+bug/567955/+subscriptions



More information about the foundations-bugs mailing list