I have a problem with same symptoms with the Intel HD Graphics 5500 (Broadwell GT2) on a Lenovo Thinkpad Yoga 14 running Ubuntu 15.04. Updating to kernel 4.0 from
http://kernel.ubuntu.com/~kernel-ppa/mainline/
fixed screen rotation, so the issue might have been patched upstream already.
I have a problem with same symptoms with the Intel HD Graphics 5500 (Broadwell GT2) on a Lenovo Thinkpad Yoga 14 running Ubuntu 15.04. Updating to kernel 4.0 from
http:// kernel. ubuntu. com/~kernel- ppa/mainline/
fixed screen rotation, so the issue might have been patched upstream already.