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by portets
Mon Jun 24, 2013 2:42 am
Forum: Advanced users
Topic: Composite Video Resolution
Replies: 6
Views: 23132

Re: Composite Video Resolution

Thanks for clarifying things a bit, still learning.

So you're saying that the Pi does output the full 525/625 scanlines?
by portets
Sat Jun 22, 2013 7:19 pm
Forum: Advanced users
Topic: STICKY: HOWTO: Move the filesystem to a USB stick/Drive
Replies: 341
Views: 545616

Re: HOWTO: Move the filesystem to a USB stick

The right USB stick can be much faster than an SD card. Especially USB3.0 sticks, even in a 2.0 port.

But more importantly(for some), overclocking core_freq causes SD card corruption, but doesn't corrupt USB drives.
by portets
Fri Jun 21, 2013 9:28 pm
Forum: Advanced users
Topic: [HOWTO] F2FS
Replies: 18
Views: 29996

Re: [HOWTO] F2FS

The pre-compiled kernel on github has had f2fs support since 3.8.4. http://www.raspberrypi.org/phpBB3/viewtopic.php?p=327312#p327312 I've been meaning to try this out. My flash drive I use for my pi formatted with f2fs is 10% faster in every test, except random writes are 2-20x faster. This was test...
by portets
Fri Jun 21, 2013 8:02 pm
Forum: Advanced users
Topic: [HOWTO] F2FS
Replies: 18
Views: 29996

Re: [HOWTO] F2FS

Doesn't the latest kernel(3.9) on github already have f2fs support compiled in?
by portets
Thu Jun 20, 2013 8:32 pm
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 606910

Re: Overclocking

I'm running at 1225 with an over_voltage of 8. I could probably go higher if my power supply was better; it only reads 4.76 volts. With 6 as my overvolt, I can hit 1150. To enable over_voltage greater than 6 you need to do force_turbo=1, but this voids the warranty . You'll also probably need to do ...
by portets
Thu Jun 20, 2013 12:20 am
Forum: Advanced users
Topic: Function of isp/h264/v3d
Replies: 4
Views: 1034

Re: Function of isp/h264/v3d

I'd also like to know what isp overclocking would do. Could overclocking it up the framerate of the camera module? v3d is for overclocking the part of the gpu that controls anything 3d like opengl es, openvg, etc. Could help framerate in games. h264 is for overclocking the part of the gpu that contr...
by portets
Wed Jun 19, 2013 4:58 am
Forum: Advanced users
Topic: Composite Video Resolution
Replies: 6
Views: 23132

Re: Composite Video Resolution

I thought that might be the case too, but only 448 scanlines are visible on my Pi with various TV's. I've read that this is usually how many are visible when a signal only contains 480 scanlines instead of 525. I also read that the average (NTSC)TV will display about 483 scanlines when the signal co...
by portets
Wed Jun 19, 2013 2:44 am
Forum: Advanced users
Topic: Composite Video Resolution
Replies: 6
Views: 23132

Composite Video Resolution

Is it defined in firmware or hardware? Why is NTSC output 720x480 and not the standard 720x525? After overscan, the average NTSC TV will only display 656x448 on a Pi. But if the standard is used, the average TV will output 656x483 after overscan and blank data removal. That's an 8% increase in scanl...
by portets
Fri May 24, 2013 6:51 pm
Forum: Advanced users
Topic: Updated GPU firmware
Replies: 308
Views: 207835

Re: Updated GPU firmware

How would I install Raspbian to an F2FS formatted drive? I know I can't dd, and copy/pasting the entire OS would cause permission issues. By the way, I'm very excited for F2FS. Iozone tests on my flash drive show a ~10% improvement in every area. Except 512k writes are 2x faster. The real improvemen...
by portets
Fri May 24, 2013 9:13 am
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 606910

Re: Overclocking

It seems that I don't get corruption overclocking core_freq under the new Fedora image. Can anyone confirm? It comes with May 14th firmware, which(iirc) corrupts under Raspbian. One major difference is that Fedora doesn't come with the CPU governor. edit: latest firmware also seems stable with a hig...
by portets
Thu Apr 11, 2013 2:49 am
Forum: Raspbian
Topic: Gstreamer 1.0 for raspbian
Replies: 171
Views: 132762

Re: Gstreamer 1.0 for raspbian

So if a video player that uses gstreamer, like Totem for example, were compiled against the version of gstreamer in this thread, would it be fully functional and hardware accelerated?
by portets
Thu Apr 11, 2013 2:33 am
Forum: Advanced users
Topic: Anyone compile gstreamers new openmax backend?
Replies: 0
Views: 513

Anyone compile gstreamers new openmax backend?

edit: disregard this. I finally found what I was looking for in a different thread. My other thread got no attention. http://www.raspberrypi.org/phpBB3/viewtopic.php?f=63&t=38410&p=321225 Phoronix posted about it: http://www.phoronix.com/scan.php?page=news_item&px=MTMzNDE Can this be easily made to...
by portets
Tue Mar 26, 2013 2:31 am
Forum: General discussion
Topic: GStreamer just got an OpenMAX IL wrapper
Replies: 2
Views: 673

GStreamer just got an OpenMAX IL wrapper

http://www.phoronix.com/scan.php?page=n ... px=MTMzNDE

Does this mean the Pi will finally hardware accelerate GStreamer?
by portets
Fri Mar 22, 2013 12:37 am
Forum: General discussion
Topic: SD Card Benchmarks
Replies: 301
Views: 296013

Re: SD Card Benchmarks

The raspberry Pi's USB port is driven by the CPU and shares it's bandwidth with the network card and other USB devices. Running a "load test" on USB sticks is problematic due to everything it's shared with. But shouldn't that only effect the peak bandwidth? 16M sequential read speeds are 37MB/s on ...
by portets
Thu Mar 21, 2013 10:51 pm
Forum: General discussion
Topic: SD Card Benchmarks
Replies: 301
Views: 296013

Re: SD Card Benchmarks

So my new USB drive is much faster than the SD card I was using. Boot time went from 28 seconds to 18 seconds.

But in many tests on the raspberry pi it says it's slower than the SD card. On my computer with a USB 2.0 port it's much faster. Why would this be? A bug?
by portets
Thu Mar 21, 2013 10:10 pm
Forum: General discussion
Topic: Swap memory cards between 256 and 512mb model b's
Replies: 2
Views: 545

Re: Swap memory cards between 256 and 512mb model b's

Wired ethernet or wifi?
by portets
Thu Mar 21, 2013 12:02 am
Forum: General discussion
Topic: SD Card Benchmarks
Replies: 301
Views: 296013

Re: SD Card Benchmarks

The only real world test I've done is boot speed. I have two cards that are similar in all speed tests, except for 4k read/write. One is about 4200 read, the other 3200 read. The faster one is 72 write, the other is 38 write.(pretty slow cards) The faster one boots in 28 seconds and the other boots ...
by portets
Wed Mar 20, 2013 11:13 pm
Forum: General discussion
Topic: Can't change usb mouse polling rate
Replies: 0
Views: 1146

Can't change usb mouse polling rate

In this thread: http://www.raspberrypi.org/phpBB3/viewtopic.php?f=63&t=22463 someone reduced CPU usage when moving the mouse by adding "usbhid.mousepoll=10" to cmdline.txt This isn't working for me. I'm using top to measure CPU and evhz to measure the polling rate, but nothing is changing. No matter...
by portets
Wed Mar 20, 2013 8:37 am
Forum: Advanced users
Topic: HOWTO: Virtual Raspbian on Qemu in Ubuntu Linux 12.10
Replies: 82
Views: 209735

Re: HOWTO: Virtual Raspbian on Qemu in Ubuntu Linux 12.10

Is it supposed to be very slow? On my Core 2 Duo it runs about half the speed of a real Pi.

I was hoping to compile programs this way, but it looks like it'll be faster on the Pi. At least with this method.
by portets
Mon Mar 18, 2013 7:03 pm
Forum: Advanced users
Topic: Anyone get Wayland/Weston working?
Replies: 3
Views: 2429

Anyone get Wayland/Weston working?

There's an official guide here: http://wayland.freedesktop.org/raspberrypi.html I was able to make and install Wayland and libxkbcommon, but making weston fails with a missing drm.h even though I have libdrm-dev. I'm pretty sure that the autogen configuration is supposed to disable needing drm.h any...
by portets
Mon Mar 18, 2013 11:27 am
Forum: General discussion
Topic: Accelerated X driver testing
Replies: 141
Views: 61195

Re: Accelerated X driver testing

Well his last post was 2 months ago, and it says he was last logged in 1 month ago.

I think it's too early to tell if he's not continuing this.
by portets
Mon Mar 18, 2013 7:23 am
Forum: General discussion
Topic: Is the foundation working on Wayland?
Replies: 0
Views: 465

Is the foundation working on Wayland?

Development: we pay contractors to undertake some of the software tasks which are too boring or fiddly for the community to have taken on off their own bat (there's Pixman and Wayland optimisation work ongoing, for example, as well as Scratch optimisation). Liz said this a couple months back. Is th...
by portets
Sun Mar 17, 2013 1:02 am
Forum: General discussion
Topic: Accelerated X driver testing
Replies: 141
Views: 61195

Re: Accelerated X driver testing

Okay, got it working under gnome 3 classic with metacity compositing.

Gnome shell exits with an EGL and DRI2 error.
by portets
Sat Mar 16, 2013 3:18 am
Forum: General discussion
Topic: Accelerated X driver testing
Replies: 141
Views: 61195

Re: Accelerated X driver testing

I got it working under LXDE, but can't under GDM3. I was hoping to maybe get gnome shell working, or at least accelerated Gnome Classic. Should it be possible?

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