Arch Linux

mojojojo

Member

From: Los Angeles, CA

Registered: 2012-10-05

Posts: 7

Website

[SOLVED] Linux kernel 3.6.2-1 issues on Macbook Pro 4,1

After my recent system upgrade to linux-3.6.2-1, I ran into a couple noticeable issues on my laptop.  The first was the inability to use "mount -i /home/user", which is in my .bash_profile, to mount my encrypted home directory at login.  An error message would respond saying that eCryptfs does not support aes.  I was able to manually mount it with "mount -t ecryptfs /home/user/.private /home/user", but could not figure out the issue.  I also noticed my laptop running a hotter that usual and found that my fans were not changing according to the sensors.  I use macfanctld from the AUR to change my fan speed and killing its process and restarting it had no effect.  I then decided my recent system upgrade may be at fault so I rebooted into linux-lts and the issues were solved.  I then downgraded linux-3.6.2-1, linux-headers-3.6.2-1, nvidia-304.51-4, virtualbox-guest-modules- 4.2.0-6, and virtualbox-host-modules-4.2.0-6 to linux-3.5.6-1, linux-headers-3.5.6-1, nvidia-304.51-3, virtualbox-guest-modules-4.2.0-5, and virtualbox-host-modules-4.2.0-5.  These issues are now fixed on my system with the downgrade and I have blocked them from upgrade in pacman.conf.  I did not notice any other issues.

Macbook Pro 4,1 (2008)
Graphics: NVIDIA Corporation G84 [GeForce 8600M GT]
uname: Linux archlinux-MBP 3.5.6-1-ARCH #1 SMP PREEMPT Sun Oct 7 19:30:49 CEST 2012 x86_64 GNU/Linux
CPU: Intel(R) Core(TM)2 Duo CPU     T9500  @ 2.60GHz

I felt it was necessary to post this issue, especially if another person also has it, so that it may be resolved in future kernel updates.  If there are any logs or other information people need to help resolve this issue or if I should notify a mod of this or something, please let me know.

Last edited by mojojojo (2012-10-28 21:15:37)

mojojojo

Member

From: Los Angeles, CA

Registered: 2012-10-05

Posts: 7

Website

Re: [SOLVED] Linux kernel 3.6.2-1 issues on Macbook Pro 4,1

After further investigation the issues were easily solved.

Regarding my encrypted home directory, I checked kernel.log and found that ecryptfs did not like the argument ecrypt_key_bytes=16 and that manual mount has the variable name ecryptfs_key_bytes=16.  So I simply changed that in my fstab.  Auto-mounting my home directory works nicely again.

In regards to the fan issue, I had to alter /etc/macfanctl.conf because the output of the sensors command (lm-sensors) contained some negative values which may have affected average temperatures and such.  I excluded those temperatures and played with the constraints more until the fans spun faster when I felt they should.

Still found it strange that some of these issues happened during kernel upgrades, but glad to have solved the issues.