Created attachment 468181 [details]
complete kernel log from restart after resume hang with RTC tracing turned on
Description of problem:
Next notebook, same old linux problem: Asus R101 eee pc hangs in ca. 10-20% of resumes from ACPI S3 (LCD backlight seems to go on, but screen remains black, no reaction to anything except complete power reset).
Version-Release number of selected component (if applicable):
All FC14 kernels, currently 18.104.22.168-64
Suspend and resume ca. 10 times, sooner or later the pc will hang on resume.
I tried to debug the hangups via /sys/power/pm_trace
$ dmesg|grep matches
[ 1.230915] hash matches drivers/base/power/main.c:521
[ 1.230974] tty tty46: hash matches
[ 1.231036] pci 0000:00:02.0: hash matches
00:02.0 VGA compatible controller: Intel Corporation N10 Family Integrated Graphics Controller
Subsystem: ASUSTeK Computer Inc. Device 83ac
Kernel driver in use: i915
Kernel modules: i915
so I guess it's (surprise) DRM / i915.
Trying to blacklist the i915 module is of course fruitless, experimenting with the pm-suspend video quirks didn't have any effect.
Please fix. Thanks.
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