<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - i915.fastboot=1 is broken on Thinkpad S1 Yoga (Haswell)" href="https://bugs.freedesktop.org/show_bug.cgi?id=108773#c24">Comment # 24</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - i915.fastboot=1 is broken on Thinkpad S1 Yoga (Haswell)" href="https://bugs.freedesktop.org/show_bug.cgi?id=108773">bug 108773</a> from <a class="email" href="mailto:johannes.krampf@gmail.com" title="Johannes Krampf <johannes.krampf@gmail.com>"> Johannes Krampf</a> <pre>After commenting out `intel_init_pch_refclk(dev_priv);` I was able to boot successfully on drm-tip 307cedb7b907ee533bf9e746d0e06bea04f2722b from 23 May (freedesktop git seems to be down, I couldn't update). It seems your suspicion is correct. :-) Running `intel_reg read 0x42014` gives me the same value when booting Arch Linux kernel 5.1.6 (with and without loading i915) and with drm-tip and fastboot: ``` # intel_reg read 0x42014 Error: /usr/share/igt-gpu-tools/registers/common_display.txt:1: ('CPU_VGACNTRL', '0x00041000', '') Error: /usr/share/igt-gpu-tools/registers/haswell:1: common_display.txt Warning: reading '/usr/share/igt-gpu-tools/registers/haswell' failed. Using builtin register spec. (0x00042014): 0x21000002 ```</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 assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>