I am also affected by this bug on my ThinkPad T440.
- Bug#897631: Kernel update breaks GDM silvio . sabo
- Bug#897631: Kernel update breaks GDM Yannick Ihmels
- Bug#897631: Kernel update breaks GDM Ben Hutchings
- Bug#897631: Kernel update breaks GDM Yannick Ihmels
- Bug#897631: [Fwd: Re: Kernel update breaks GDM] Ben Hutchings
- Bug#897631: Wiggling works! Magnus Wallin
