Messages in this thread | | | From | Bjørn Mork <> | Subject | Re: [PATCH] drm/i915: fix failure to power off after hibernate | Date | Thu, 26 Feb 2015 21:29:31 +0100 |
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Ville Syrjälä <ville.syrjala@linux.intel.com> writes:
>> @@ -651,7 +651,14 @@ static int i915_drm_suspend_late(struct drm_device *drm_dev) >> } >> >> pci_disable_device(drm_dev->pdev); >> - pci_set_power_state(drm_dev->pdev, PCI_D3hot); >> + /* >> + * During hibernation on some GM45 platforms the BIOS may try to access >> + * the device even though it's already in D3 and hang the machine. So >> + * leave the device in D0 on those platforms and hope the BIOS will >> + * power down the device properly. > > Please include the model of the known bad machine in this comment, to > help future archaeologists.
Here are some details:
bjorn@nemi:~$ grep . /sys/class/dmi/id/{bios,product}* 2>/dev/null /sys/class/dmi/id/bios_date:12/19/2011 /sys/class/dmi/id/bios_vendor:LENOVO /sys/class/dmi/id/bios_version:6EET55WW (3.15 ) /sys/class/dmi/id/product_name:2776LEG /sys/class/dmi/id/product_version:ThinkPad X301
Please let me know if you need some other data.
Bjørn
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