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[Bug 1300416] Re: Install of 14.04 fails with 3.13.0-20-generic kernel

 

I'm still not having any luck in generating an is which will boot
successfully on more than one of my systems. Seems like it shouldn't be
this hard ...

Anyway, maybe we'll try another avenue. When booting to the installer,
if you add "brcmsmac.blacklist=1" to the kernel boot options it should
prevent the module from loading at all. This should be enough to get you
through the install. On UEFI systems I get a normal grub menu, so
pressing 'e' on the install option and adding that text to the end of
the "linux ..." line before booting does the trick.

After installation has finished you can verify that you still have the
bug. If you have a /lib/firmware/brcm directory, temporarily rename it
to something else, e.g. /lib/firmware/brcm-bak, then run 'sudo modprobe
-r brcmsmac, sudo modprobe brcmsmac' as root (if you don't have
/lib/firmware/brcm you don't need to do any of that). You should
immediately see the "brcmsmac: fail to load firmware brcm/bcm43xx-0.fw"
message appear in dmesg, and a couple of minutes later you should see
the stack traces. After this you'll like have to hard power-off your
system to reboot.

Now install the test build and reboot to that kernel. Try the same
sequence of steps as above. You should still see the "fail to load
firmware" message, but you shouldn't get the stack traces in dmesg. If
you get these results then the problem should be gone in the installer
as well.

Thanks!

** Changed in: linux (Ubuntu)
       Status: In Progress => Incomplete

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https://bugs.launchpad.net/bugs/1300416

Title:
  Install of 14.04 fails with 3.13.0-20-generic kernel

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  I've tried installing the latest daily build of Trusty server, with a
  3.13.0-20-generic kernel, on several Lenovo ThinkPad models (X121e,
  X131e, and L330). It's failed on every one of them. The installer
  hangs on an empty purple screen (see screen shot). Switching to VT4
  reveals kernel error messages, which also appear in /var/log/syslog.
  (A bash shell can be obtained on VT2 or VT3 to retrieve this log
  file.) I'm attaching a copy of the log file.

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