MobileRead Forums - View Single Post - How to update Kindle 2/DX/DXG with YifanLu's firmware from 3.2.1 to 3.4.2

sam.vanratt · 12-28-2017, 01:07 PM

Hi to everyone here
I tried to enable swap but after creating the swap and marking the swap I'm stuck at not being able to use it:
dd if=/dev/zero of=/mnt/us/swapfile.swap bs=1M count=64
/mnt/us/busybox mkswap /mnt/us/swapfile.swap
/mnt/us/busybox swapon -a
(a "/mnt/us/busybox swapon /mnt/us/swapfile.swap" is corrected with invalid argument)

dmesg "swapon: swapfile has holes"
free shows of course no swap used

(busybox is this one │ 25.016Bytes│19.08.15│ 0:16)

As the swapfile is freshly created i couldn't help wondering where the nonsequentiell blocks (holes) come from.

Apart from that way: my DXG uses 107MB RAM at boottime, so I understand the need for swap or even (guessed so far) out of memory crashes. Wouldn't it be practical to save nonessentiell RAM by deactivating some modules like the two Audio/Volume daemons as MP3/WMA playback is cracking, so unusable anyway.
Cheers
Sam

12-28-2017, 01:07 PM	#301
sam.vanratt Member Posts: 14 Karma: 10 Join Date: Dec 2017 Device: Kindle DX (G)	Hi to everyone here I tried to enable swap but after creating the swap and marking the swap I'm stuck at not being able to use it: dd if=/dev/zero of=/mnt/us/swapfile.swap bs=1M count=64 /mnt/us/busybox mkswap /mnt/us/swapfile.swap /mnt/us/busybox swapon -a (a "/mnt/us/busybox swapon /mnt/us/swapfile.swap" is corrected with invalid argument) dmesg "swapon: swapfile has holes" free shows of course no swap used (busybox is this one │ 25.016Bytes│19.08.15│ 0:16) As the swapfile is freshly created i couldn't help wondering where the nonsequentiell blocks (holes) come from. Apart from that way: my DXG uses 107MB RAM at boottime, so I understand the need for swap or even (guessed so far) out of memory crashes. Wouldn't it be practical to save nonessentiell RAM by deactivating some modules like the two Audio/Volume daemons as MP3/WMA playback is cracking, so unusable anyway. Cheers Sam Last edited by sam.vanratt; 12-28-2017 at 01:13 PM.