<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [KBL] Error DC state mismatch when suspending to disk" href="https://bugs.freedesktop.org/show_bug.cgi?id=95149#c8">Comment # 8</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [KBL] Error DC state mismatch when suspending to disk" href="https://bugs.freedesktop.org/show_bug.cgi?id=95149">bug 95149</a> from <a class="email" href="mailto:christophe.prigent@intel.com" title="cprigent <christophe.prigent@intel.com>"> cprigent</a> <pre>Created <a href="attachment.cgi?id=123626" name="attach_123626" title="kbl-dmesg-igt-all">attachment 123626</a> <a href="attachment.cgi?id=123626&action=edit" title="kbl-dmesg-igt-all">[details]</a> kbl-dmesg-igt-all Patch v3 is already available with last kernel from nightly While launching IGT all, I see this error several times: root@KBLU1:~# grep -i "DC state mismatch" /var/log/kern.log May 11 11:42:13 KBLU1 kernel: [ 44.501739] [drm:gen9_set_dc_state [i915]] *ERROR* DC state mismatch (0x0 -> 0x2) May 11 11:52:37 KBLU1 kernel: [ 597.702751] [drm:gen9_set_dc_state [i915]] *ERROR* DC state mismatch (0x0 -> 0x2) May 11 12:24:05 KBLU1 kernel: [ 254.040659] [drm:gen9_set_dc_state [i915]] *ERROR* DC state mismatch (0x0 -> 0x2) May 11 14:19:44 KBLU1 kernel: [ 385.919901] [drm:gen9_set_dc_state [i915]] *ERROR* DC state mismatch (0x0 -> 0x2) May 11 16:16:15 KBLU1 kernel: [ 26.853465] [drm:gen9_set_dc_state [i915]] *ERROR* DC state mismatch (0x0 -> 0x2) May 11 17:34:49 KBLU1 kernel: [ 7.389852] [drm:gen9_set_dc_state [i915]] *ERROR* DC state mismatch (0x0 -> 0x2) The right firmware is loaded: root@KBLU1:~# dmesg |grep dmc May 11 17:41:43 KBLU1 kernel: [ 1.788870] [drm:intel_csr_ucode_init] Loading i915/kbl_dmc_ver1.bin May 11 17:41:43 KBLU1 kernel: [ 1.789281] [drm] Finished loading i915/kbl_dmc_ver1.bin (v1.1) root@KBLU1:~# cat /sys/kernel/debug/dri/0/i915_dmc_info fw loaded: yes path: i915/kbl_dmc_ver1.bin version: 1.1 program base: 0x09004040 ssp base: 0x00002fc0 htp: 0x00b40068 Tested with same platform Kernel: drm-intel-nightly 4.6.0-rc7 61f856f from <a href="http://cgit.freedesktop.org/drm-intel/">http://cgit.freedesktop.org/drm-intel/</a> commit 61f856faa1e6ff9dddad214be1e372e8aacfc0f4 Author: Ville SyrjÃ¤lÃ¤ <<a href="mailto:ville.syrjala@linux.intel.com">ville.syrjala@linux.intel.com</a>> Date: Mon May 9 19:24:21 2016 +0300 drm-intel-nightly: 2016y-05m-09d-16h-24m-01s UTC integration manifest drm: libdrm 2.4.68 ea78c17 from git://anongit.freedesktop.org/mesa/drm cairo: 1.15.2 db8a7f1 from git://anongit.freedesktop.org/cairo IGT: 1.14 cc24755 from <a href="http://anongit.freedesktop.org/git/xorg/app/intel-gpu-tools.git">http://anongit.freedesktop.org/git/xorg/app/intel-gpu-tools.git</a></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>