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    SubjectRe: i915 resume-from-hibernation problems on resume with current Linus' tree
    On Wed, 5 Mar 2014, Daniel Vetter wrote:

    > > > Maybe I should say that I'm booting the box with
    > > >
    > > > [ 0.000000] Kernel command line:
    > > > BOOT_IMAGE=/boot/vmlinuz-3.14.0-rc5+ root=/dev/sdb2 ro
    > > > root=/dev/sdb2 ignore_loglevel log_buf_len=10M resume=/dev/sdb1
    > > > i915.i915_enable_rc6=4 i915.i915_enable_fbc=1 i915.lvds_downclock=1
    > > > i915.powersave=1
    > >
    > > From looking at
    > >
    > > http://lkml.kernel.org/r/1394011994-30604-1-git-send-email-daniel.vetter@ffwll.ch
    > >
    > > it looks like I should stop using the rc6/fbc settings?
    > >
    > > :-)
    >
    > Indeed. If going back to defaults fixes your issues, then it's not a real
    > bug. There are reasons the defaults are as-is ...

    Let's not have the issues mixed.

    The one originally reported in this thread

    *ERROR* render ring initialization failed ctl 0001f001 head 00003004 tail 00000000 start 00003000

    and subsequent resume busted is there even with the default i915 driver
    settings.

    Thanks,

    --
    Jiri Kosina
    SUSE Labs


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