Hi Andrew, Thank you for updating. Which kernel did you test, can you do a uname -a? I supplied a kernel with both an auto-demotion patch and the C6 disable patch.
Christopher asks you to confirm if you are actually experiencing the exact bug that Len Brown is trying to fix : https://bugzilla.kernel.org/show_bug.cgi?id=109051. That bug will be closed when a patch is found that will make the kernel stable on Baytrail without the kernel parameter. To be sure you have this issue, we all would like to see if an unpatched kernel with that parameter gives you no freezes, then we know you have that issue and your system is valuable to test with. If it still freezes, you may have another problem (one of them is audio so try to test without it). To apply the kernel parameter, in a bash terminal do (replace vim with any editor if needed): sudo vim /etc/default/grub comment out the line with GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" and copy it and add the parameter so you will have: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash intel_idle.max_cstate=1" then save and exit and run: sudo update-grub That will regenerate the grub entries with the parameter added. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1575467 Title: [Dell Inspiron 3451] WARNING: CPU: 1 PID: 1297 at /build/linux-lts- utopic-vy2yyy/linux-lts- utopic-3.16.0/drivers/gpu/drm/i915/intel_display.c:1743 vlv_wait_port_ready+0x126/0x170 [i915]() To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1575467/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
