I have the same issue with a Lenovo Thinkpad Edge 13.
robi@edge:~$ lspci|grep VGA 01:05.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI RS880M [Mobility Radeon HD 4200 Series]
Also there seem to be other reports of the same issue: bug #41234, #41762, #50327, #52001, and #54791.
I have the same issue with a Lenovo Thinkpad Edge 13.
robi@edge:~$ lspci|grep VGA
01:05.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI RS880M [Mobility Radeon HD 4200 Series]
Also there seem to be other reports of the same issue: bug #41234, #41762, #50327, #52001, and #54791.