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by bleep42
Mon Jan 12, 2015 5:27 pm
Forum: Other projects
Topic: Pi-Portable & or Monitor.
Replies: 72
Views: 51075

Re: Pi-Portable & or Monitor.

Thanks Kevin. My controller board is the same as yours. i'll have it tomorrow. i will need to search for a DC power source at a electronic store, cause i didn't ordered one bundled with the controller board. Your post helped me a lot. which battery are you thinking of using for your case? i was thi...
by bleep42
Fri Jan 09, 2015 8:21 pm
Forum: Other projects
Topic: Pi-Portable & or Monitor.
Replies: 72
Views: 51075

Re: Pi-Portable & or Monitor.

do i need the voltage regulator you used also? Hi Roberto, If your screen driver is the same as mine, it needs 12V DC, but it will work down to 7V DC, I used the regulator so I could use any DC power source from 12V up to 40V DC, I'm also intending to put a battery inside the case, which would need...
by bleep42
Thu Jan 08, 2015 8:49 pm
Forum: Advanced users
Topic: Thermal Specs
Replies: 7
Views: 1008

Re: Thermal Specs

You probably want to talk to these people.
http://www.raspberrypi.org/penguin-lifelines/
They have been using them @ - 42C and below in the Antarctic. Good luck.
Kevin.
by bleep42
Tue Sep 16, 2014 3:31 pm
Forum: Troubleshooting
Topic: EXT4 USB Disk journal corruption
Replies: 20
Views: 3639

Re: EXT4 USB Disk journal corruption

'skipping any contents from this failed directory' is a generic rsync error, not necessarily indicating disk problems. If the disk mounts and behaves perfectly under Raspbian 06-20 then at least the disk is fine. I would go back to the earlier Raspbian, or wait for an update to fix the 09-09 bug, o...
by bleep42
Mon Sep 15, 2014 4:06 pm
Forum: Troubleshooting
Topic: EXT4 USB Disk journal corruption
Replies: 20
Views: 3639

Re: EXT4 USB Disk journal corruption

I've done a bit more checking. If I boot the most recent Raspbian 09-09 normally off of SD card from a fresh install, login to the command prompt, plug in the USB disk, which I have already formatted EXT4 on another machine and it's working happily on that machine. I then mount it 'sudo mount /dev/s...
by bleep42
Mon Sep 15, 2014 3:36 pm
Forum: Troubleshooting
Topic: EXT4 USB Disk journal corruption
Replies: 20
Views: 3639

Re: EXT4 USB Disk journal corruption

Kevin Yes I know all that. It is just a bit confusing to say "format" when you mean "create a file system". I don't say your disk is duff - it is reasonably unlikely. You say the rsync threw loads of disk errors, exactly what error messages were they ? Jim Hi Jim 'skipping any contents from this fa...
by bleep42
Mon Sep 15, 2014 2:16 pm
Forum: Troubleshooting
Topic: EXT4 USB Disk journal corruption
Replies: 20
Views: 3639

Re: EXT4 USB Disk journal corruption

With this command: sudo fdisk /dev/sda did you attempt to format the wrong disk ? Was /dev/sda actually the SD card from which Raspbian was running ? Did you intend to type sudo fdisk /dev/sdb ? No; as far as I know you can't fdisk a mounted disk. In my original post I realise I had already formatt...
by bleep42
Mon Sep 15, 2014 10:43 am
Forum: Raspbian
Topic: EXT4 USB Disk journal corruption
Replies: 2
Views: 610

Re: EXT4 USB Disk journal corruption

RaTTuS wrote:how is the HD powered ?
From the USB port on a B+ it is a 2.5" takes 250mA, my power supply is 3A, 5.1V on the board when all powered up; but in both cases I'm using the exact same hardware, so no, it's not power related.
Regards,
Kevin Moore.
by bleep42
Mon Sep 15, 2014 8:07 am
Forum: Raspbian
Topic: EXT4 USB Disk journal corruption
Replies: 2
Views: 610

EXT4 USB Disk journal corruption

Hi, I've run into a problem with USB disk corruption. My setup is a Pi B+ running Raspbian, initial install was Raspbian 2014-06-20, I last did an update, probably 3 weeks ago. My setup is only /boot on the SD card, with everything else on a small USB hard disk, this has been working great since my ...
by bleep42
Sun Sep 14, 2014 5:45 pm
Forum: Troubleshooting
Topic: EXT4 USB Disk journal corruption
Replies: 20
Views: 3639

EXT4 USB Disk journal corruption

Hi, I've run into a problem with USB disk corruption. My setup is a Pi B+ running Raspbian, initial install was Raspbian 2014-06-20, I last did an update, probably 3 weeks ago. My setup is only /boot on the SD card, with everything else on a small USB hard disk, this has been working great since my ...
by bleep42
Tue Jun 17, 2014 11:40 am
Forum: Other projects
Topic: Pi-Portable & or Monitor.
Replies: 72
Views: 51075

Re: Pi-Portable & or Monitor.

Sorry to bring this back, but I know very little about electronics and I aim to buy the same model of LCD controller you have mentioned and hook it up to the rPi. I aim to build a general purpose portable computer with this and a LVDS 16" panel, which also has GPIO. I have a couple of questions: Th...
by bleep42
Wed May 28, 2014 9:25 pm
Forum: Graphics programming
Topic: Low-level (Linux framebuffer) graphics programming tutorial
Replies: 62
Views: 74223

Re: Low-level (Linux framebuffer) graphics programming tutor

... getting almost 400 generations a second, with a 704x450 buffer... That is pretty amazing. I wrote a version of life using DispmanX to demonstrate double-buffering. I am limited by the refresh rate of the display (60Hz for PAL), but can only maintain 60 iterations per second with a 500x500 cell ...
by bleep42
Wed May 28, 2014 9:04 am
Forum: Graphics programming
Topic: Low-level (Linux framebuffer) graphics programming tutorial
Replies: 62
Views: 74223

Re: Low-level (Linux framebuffer) graphics programming tutor

Hi rst, Thanks very much for your blogs, I found them by accident while googling. I've used your example code around about part 8 to implement a version of Life. I had been using a library from http://www.cl.cam.ac.uk/projects/raspberrypi/tutorials/image-processing/intro.html , but this was relative...
by bleep42
Fri Feb 07, 2014 12:17 pm
Forum: Other projects
Topic: Pi-Portable & or Monitor.
Replies: 72
Views: 51075

Re: Pi-Portable & or Monitor.

...The main problem was getting a driver for the LCD panel, I found this one M.NT68676.2A which I was able to buy and have programmed for my LCD by a company on Ebay and cost about £25 including a button board and custom cable for the LCD... That is very interesting. I haven't heard of anyone else ...
by bleep42
Sun Jan 26, 2014 12:06 pm
Forum: Graphics programming
Topic: fbturbo - dma hardly ever gets used?
Replies: 45
Views: 10137

Re: fbturbo - dma hardly ever gets used?

Hi jamesh,
Looking forward to being able to give this a go. :-)
by bleep42
Wed Jan 22, 2014 4:33 pm
Forum: Other projects
Topic: Pi-Portable & or Monitor.
Replies: 72
Views: 51075

Pi-Portable & or Monitor.

PiPortable.jpg PiGuts.jpg Hi Pi People, :-) I had some bits and pieces lying around, which I've kept over the years because they 'could be useful' mainly a nice LCD screen from a dead laptop, but also a miniature hard drive from a portable music player and of course a Pi. So I decided to build a Pi...
by bleep42
Mon Dec 30, 2013 5:22 pm
Forum: Raspbian
Topic: Accelerated x driver?
Replies: 12
Views: 11252

Re: Accelerated x driver?

Hi neobusy,
I don't believe a standard update will do it, you need to see this thread. http://www.raspberrypi.org/phpBB3/viewt ... 17#p467617 This is what I've done to an old standard Raspbian install and it's working fine. :-)
Regards, Kevin.
by bleep42
Sun Dec 29, 2013 6:36 pm
Forum: General discussion
Topic: Experimental enhanced X driver (rpifb)
Replies: 98
Views: 52044

Re: Experimental enhanced X driver (rpifb)

Hi ssvb & hglm. Thanks for all your hard work :-) I've installed your driver on a standard install of Raspbian and can definitely see a speed improvement, especially to dragging windows around. I was one of the people who was testing Simons Accelerated X driver, so I've reproduced some of the scenar...
by bleep42
Sat Nov 23, 2013 9:14 am
Forum: Mathematica
Topic: No menu/desktop shortcuts
Replies: 12
Views: 20321

Re: No menu/desktop shortcuts

Hi,
It appears that once you have run Mathmatica from the command line as above, a short cut will appear in the app launcher under the 'Education' menu item. I now have one and I didn't put it there. ;-)
by bleep42
Thu Apr 04, 2013 7:07 am
Forum: General discussion
Topic: entire file system on usb drive
Replies: 4
Views: 1066

Re: entire file system on usb drive

This is the way I've always run my Pi and it works fine, it also makes it faster in operation.
Regards Kevin.
by bleep42
Tue Jan 29, 2013 10:58 am
Forum: General discussion
Topic: Accelerated X driver testing
Replies: 141
Views: 58455

Re: Accelerated X driver testing

The catch in this scenario maybe was that switching from true to false was done without a reboot. Just killed the Xorg and then restarted. I did not even unload/reload the kernel module. Maybe that made the difference? Simon? Hi Diereinegier, Yes I always do a complete stop, I even quit out of gdb ...
by bleep42
Tue Jan 29, 2013 8:54 am
Forum: General discussion
Topic: Accelerated X driver testing
Replies: 141
Views: 58455

Re: Accelerated X driver testing

diereinegier wrote:Switching back to true: corruptions are still gone and everything seems stable.
Hi Diereinegier,
Do you really mean setting "SelfManagedOffscreen" to "true" here? When I set this to "false" it removes all my screen corruptions, when I set it "true" they all come back.
Regards, Kevin.
by bleep42
Mon Jan 28, 2013 4:24 pm
Forum: General discussion
Topic: Accelerated X driver testing
Replies: 141
Views: 58455

Re: Accelerated X driver testing

PS. I've just added another picture of Midori, as a new problem has appeared, again intermittently, but roughly half the time, I'm getting a random pixel pattern on half of the "Post a New Topic" button, again this happens as I scroll the page up and down. Regards, Kevin. I saw very similar problem...
by bleep42
Mon Jan 28, 2013 3:12 pm
Forum: General discussion
Topic: Accelerated X driver testing
Replies: 141
Views: 58455

Re: Accelerated X driver testing

PS. I've just added another picture of Midori, as a new problem has appeared, again intermittently, but roughly half the time, I'm getting a random pixel pattern on half of the "Post a New Topic" button, again this happens as I scroll the page up and down.
Regards, Kevin.
by bleep42
Mon Jan 28, 2013 2:29 pm
Forum: General discussion
Topic: Accelerated X driver testing
Replies: 141
Views: 58455

Re: Accelerated X driver testing

Hi Simon, I've done an apt-get upgrade and an rpi-update. Linux raspberrypi 3.6.11+ #362 PREEMPT Tue Jan 22 14:52:21 GMT 2013 armv6l GNU/Linux Jan 26 2013 19:25:49 Copyright (c) 2012 Broadcom version 365344 (release) I've also turned off the CPU frequency and temp display on the task bar. Unfortunat...

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