herbthom
Posts: 25
Joined: Sun Mar 10, 2013 6:10 pm

Minimum gpu_mem setting for F18

Fri Mar 22, 2013 3:37 am

In case it saves someone else some time, by experiment I've found that the minimum bootable /boot/config.txt gpu_mem setting for F18 on my 256MB Pi is 24:

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# /boot/config.txt 
...
gpu_mem=24
This gives:

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$ cat /proc/meminfo 
MemTotal:         227432 kB
...

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jojopi
Posts: 3567
Joined: Tue Oct 11, 2011 8:38 pm

Re: Minimum gpu_mem setting for F18

Fri Mar 22, 2013 2:54 pm

This is because Seneca have omitted the cutdown firmware files start_cd.elf and fixup_cd.dat. If you download those yourself you can boot with gpu_mem=16 like on any normal distro.

https://github.com/raspberrypi/firmware ... aster/boot

herbthom
Posts: 25
Joined: Sun Mar 10, 2013 6:10 pm

Re: Minimum gpu_mem setting for F18

Fri Mar 22, 2013 11:02 pm

jojopi wrote:This is because Seneca have omitted the cutdown firmware files start_cd.elf and fixup_cd.dat. If you download those yourself you can boot with gpu_mem=16 like on any normal distro.

https://github.com/raspberrypi/firmware ... aster/boot
Thanks for the tip.

The following worked for me:

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cd /boot
su
wget https://github.com/raspberrypi/firmware/raw/master/boot/bootcode.bin
wget https://github.com/raspberrypi/firmware/raw/master/boot/fixup.dat
wget https://github.com/raspberrypi/firmware/raw/master/boot/fixup_cd.dat
wget https://github.com/raspberrypi/firmware/raw/master/boot/start.elf
wget https://github.com/raspberrypi/firmware/raw/master/boot/start_cd.elf

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