<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - LCD flickering on Thinkpad T440p (Haswell) with kernel 4.6-rc4 (PSR enabled)" href="https://bugs.freedesktop.org/show_bug.cgi?id=95176#c50">Comment # 50</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - LCD flickering on Thinkpad T440p (Haswell) with kernel 4.6-rc4 (PSR enabled)" href="https://bugs.freedesktop.org/show_bug.cgi?id=95176">bug 95176</a> from <a class="email" href="mailto:ein4rth@gmail.com" title="raoul <ein4rth@gmail.com>"> raoul</a> <pre>On my i7-4510U with kernels 4.6 and 4.7 system always hangs after boot (as soon as gdm appears), and only i915.enable_psr=0 solves the problem. Kernel 4.5 worked flawlessly. This is my lscpi output: 00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b) (prog-if 00 [VGA controller]) Subsystem: Toshiba America Info Systems Device 0005 Flags: bus master, fast devsel, latency 0, IRQ 46 Memory at f0000000 (64-bit, non-prefetchable) [size=4M] Memory at e0000000 (64-bit, prefetchable) [size=256M] I/O ports at 3000 [size=64] [virtual] Expansion ROM at 000c0000 [disabled] [size=128K] Capabilities: <access denied> Kernel driver in use: i915 Kernel modules: i915</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>