Bug 97251

Summary:	Machine freezes on a MBP 8,1
Product:	Platform Specific/Hardware	Reporter:	Chris Zimmermann (monochromec)
Component:	x86-64	Assignee:	platform_x86_64 (platform_x86_64)
Status:	RESOLVED OBSOLETE
Severity:	high
Priority:	P1
Hardware:	Intel
OS:	Linux
Kernel Version:	3.19.0.15	Subsystem:
Regression:	No	Bisected commit-id:

Description Chris Zimmermann 2015-04-25 15:53:26 UTC

Kernel 3.19.0.15 (and also 4.0 and 4.0.rc7) cause the login session as created by Lightdm to freeze. Symptoms: keyboard, trackpad and external USB mouse don'T work, Macbook is not visible on the network. Symptoms first occurred after recent upgrade to Ubuntu 15.04. Kernels 3.16.0.33 and 3.16.0.34 work OK.

More details at:  

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1448458

Comment 1 Chris Zimmermann 2015-04-29 14:08:28 UTC

Bug was caused by heavily hacked version of bcmwl (6.20.155). Re-installation of the corresponding version from the Vivid repo solved the problem.