On Sun, 2014-08-10 at 14:50 -0500, John M. wrote: > Hi, > > When the 3.14.x kernel first hit Debian testing, I tried booting > without blacklisting nouveau, and got the same systemd's emergency > prompt caused by disk corruption.
Oh that's really bad. > The recent comments related to the issue, at the github page for > bumblebee's project > ( https://github.com/Bumblebee-Project/bbswitch/issues/78 ), mention > that the issue goes away by adding acpi_osi="Windows 2013" to the > kernel command line. Since version 3.15, Linux reports as Windows 2013 (i.e. Windows 8.1) by default. So perhaps this is now fixed. Would you be able to make a test installation using the kernel from experimental (separate from your working system, to avoid the risk of further disk corruption)? > That certainly worked for me, and right now I have bumblebee-nvidia > installed and working properly, and the laptop's battery consumption > is down by 40-50%. > > As far as I know, the acpi_osi trick doesn't solve the issue in all > the cases ---e.g., it didn't work for Mr. Smith. > > The bumblebee package installs its own bumblebee.conf > into /etc/modprobe.d, which effectively blacklists nouveau and > nvidia*, so it seems that for the NVIDIA Optimus card those modules > shouldn't be loaded at all by default. One of them should be loaded. But bumblebee apparently wants to load and unload them itself rather than letting udev do it. Ben. -- Ben Hutchings Any sufficiently advanced bug is indistinguishable from a feature.
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