<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#c52">Comment # 52</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:root@kryo.se" title="Erik Ekman <root@kryo.se>"> Erik Ekman</a> <pre>I have a Toshiba Portege Z30A-15M with i7-4500U which hangs during boot a few seconds after the window to enter the root partition encryption key is shown. 4.5 works fine, and I found this change by bisecting. (03b7b5f983091bca1, drm/i915/psr: Try to program link training times correctly) 00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller]) Subsystem: Toshiba America Info Systems Device 0005 Flags: bus master, fast devsel, latency 0, IRQ 44 Memory at f0000000 (64-bit, non-prefetchable) [size=4M] Memory at e0000000 (64-bit, prefetchable) [size=256M] I/O ports at 3000 [size=64] Expansion ROM at <unassigned> [disabled] Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [d0] Power Management version 2 Capabilities: [a4] PCI Advanced Features Kernel driver in use: i915 Kernel modules: i915 Using the enable_psr=0 argument makes my machine boot normally with later kernels.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>