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by mdr86
Wed Mar 16, 2016 9:08 am
Forum: Troubleshooting
Topic: Kernel oops & RPi locking up
Replies: 0
Views: 409

Kernel oops & RPi locking up

I've had my Raspberry Pi 2 lock up a few of times recently. It's running as a headless server, and each time it stopped responding, including to SSH connections. I would also have it freeze on an existing SSH connection shortly before locking up entirely. I'm on the 4.1.17 kernel, as when I updated ...
by mdr86
Wed Oct 01, 2014 5:46 pm
Forum: General discussion
Topic: Making a tool to install encrypted/customised Raspbian
Replies: 7
Views: 1764

Re: Making a tool to install encrypted/customised Raspbian

Ooh, that's neat! I hadn't come across cryptsetup-reencrypt before. That might well work. Thanks!
by mdr86
Wed Oct 01, 2014 4:33 pm
Forum: General discussion
Topic: Making a tool to install encrypted/customised Raspbian
Replies: 7
Views: 1764

Re: Making a tool to install encrypted/customised Raspbian

I am not an expert on cryptographic stuff, but maybe it would be the easiest way to just provide an ready to use SD card image with an script started on first boot up to change the initial passwort of the encrypted partition (and resizing it). Then it sets up dropbear and generates the neccessary k...
by mdr86
Tue Sep 30, 2014 9:27 pm
Forum: General discussion
Topic: Making a tool to install encrypted/customised Raspbian
Replies: 7
Views: 1764

Re: Making a tool to install encrypted/customised Raspbian

The passphrase is entered on boot, or over ssh using dropbear. It only ever exists in RAM. Physical security is only needed to protect against cold boot attacks , which are hard to pull off. But this thread is not for discussing the benefits (or lack of benefits) of encryption. I am familiar with se...
by mdr86
Tue Sep 30, 2014 8:44 pm
Forum: General discussion
Topic: Making a tool to install encrypted/customised Raspbian
Replies: 7
Views: 1764

Making a tool to install encrypted/customised Raspbian

I'm thinking of making a tool to install an OS to an SD card for a Raspberry Pi. My main focus is making it easier to set up a Raspbian image with full disk encryption. I'll probably include at least changing the initial username as well. Are there any other similar tools already? What features/cust...
by mdr86
Thu May 31, 2012 12:14 pm
Forum: General discussion
Topic: Raspberry Pi boot process
Replies: 12
Views: 135691

Re: Raspberry Pi boot process

Re the 0x8000 thing - I believe the contents of cmdline.txt is loaded in the section between 0x0000 and 0x8000 (specifically, at 0x100). If you don't have a cmdline.txt, that's probably why it's been working! I don't know if anything else is written in that area though. Another boot process question...
by mdr86
Sun May 27, 2012 2:40 pm
Forum: General discussion
Topic: Raspberry Pi boot process
Replies: 12
Views: 135691

Raspberry Pi boot process

I've been trying to make sure I properly understand the Raspberry Pi boot process. What I understand so far, mostly from the config.txt thread , is this: When the Raspberry Pi is first turned on, the ARM core is off, and the GPU core is on. At this point the SDRAM is disabled. The GPU starts executi...
by mdr86
Tue Dec 27, 2011 10:53 am
Forum: General discussion
Topic: Hardware video decoding
Replies: 1
Views: 2005

Re: Hardware video decoding

I know that the Raspberry Pi supports h.264 in hardware. I have 2 questions, really:

- are any other codecs supported?

- what software will be available on release that can take advantage of the hardware decoding?

Thanks!

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