<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - No package C-states on Dell XPS 15 9570 after resume from deep sleep" href="https://bugs.freedesktop.org/show_bug.cgi?id=111623#c18">Comment # 18</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - No package C-states on Dell XPS 15 9570 after resume from deep sleep" href="https://bugs.freedesktop.org/show_bug.cgi?id=111623">bug 111623</a> from <a class="email" href="mailto:don.hiatt@intel.com" title="Don Hiatt <don.hiatt@intel.com>"> Don Hiatt</a> <pre>It looks like once the driver is loaded with enable_guc=3, reloading the driver with enable_guc=0 always fails and requires a reboot. This is what I was running into earlier today. Also, once the driver is loaded with enable_guc=0 we never get into rc6 as the gpu is wedged. The only fix is to reboot or to load the driver with enable_guc=3. Same behavior with 'kbl_guc_32.0.3.bin'. Looks to be a firmware issue. --[load driver with enable_guc=3]--- [ 39.892295] [drm] GuC communication stopped <---- driver removed --[reload driver with enable_guc=0]--- [ 57.712627] Setting dangerous option enable_guc - tainting kernel [ 57.712988] i915 0000:00:02.0: Found 64MB of eDRAM [ 57.712998] i915 0000:00:02.0: vgaarb: deactivate vga console [ 57.714338] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [ 57.714339] [drm] Driver supports precise vblank timestamp query. [ 57.715451] [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_04.bin (v1.4) [ 57.769281] i915 0000:00:02.0: GuC initialization failed -1 [ 57.769285] i915 0000:00:02.0: Enabling uc failed (-5) [ 57.769291] i915 0000:00:02.0: Failed to initialize GPU, declaring it wedged!</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>