SOLVED 4.2.1 kernel issue with 4.2.1-1

[moonman]

and the ethernet on my GFH no longer works.

Going to get into the device via rescue mode, how can I boot an earlier kernel?

[Wesman26]

Same problem with my GFN, anybody have a workaround?

[moonman]

Looks like BFQ bug. Edit/create uEnv.txt with the following line added:
$this->bbcode_second_pass_code('', 'optargs=elevator=cfq')
It should get you booting for now, next release will have this fixed

[moonman]

Fixed in 4.2.1-2

If you can't boot now, then if you have a rescue system installed, just boot into that, then:
$this->bbcode_second_pass_code('', 'mount /dev/sda1 /mnt # Assuming sda1 is your rootfs partition
arch-chroot /mnt /usr/bin/bash
pacman -Suy
exit
sync
reboot')

If you have no rescue system, then you will have to use any linux machine. Create or edit uEnv.txt under /boot on the rootfs partition with the following contents:
$this->bbcode_second_pass_code('', 'optargs=elevator=cfq')
Then boot your arm device, run full update with pacman -Syu and remove changes to uEnv.txt

[isson]

My GFH died after linux-firmware update. Now no led blinking only ethernet led. i m only hearing hdd spin sound. no ssh, no taking ip from router.. do you think is it dead?

[moonman]

It is not dead. Is it just linux-firmware that you updated

[isson]

I updated yesterday evening and network connection is not worked.i tried reboot and isn't worked.after i powered off. Today nothing opening. no leds no ip but hdd spin starting. How do I make it work?

[hecatae]

jumped on irc #archarm-linux yesterday and WarheadSE helped me downgrade the kernel using arch-chroot.

I will not update my nas, there's too much important stuff on it

[WarheadsSE]

hecatae, would be nice if you could confirm this fixes the issue.

[hecatae]

ok, as WarheadSE insists,

$this->bbcode_second_pass_code('', 'Linux goflexhome 4.2.1-2-ARCH #1 PREEMPT Tue Sep 22 21:58:45 MDT 2015 armv5tel GNU/Linux')

working, fixed, thankyou moonman