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_J@n_ · (This post was last modified: 2016-12-27, 19:31 by _J@n_.)

(2016-12-27, 18:39)Stereodude Wrote: I'm thinking about replacing one of my Raspberry Pi 3's with a ODROID C2, but have a few questions.

1) If my rPi 3 has this sort of disk usage of the uSD with LE Jarvis, will the Odroid C2 running LE Jarvis be about the same?

Code:
Filesystem Size Used Available Use% Mounted on devtmpfs 363.4M 0 363.4M 0% /dev /dev/mmcblk0p1 511.7M 127.8M 384.0M 25% /flash /dev/mmcblk0p2 28.4G 217.9M 28.2G 1% /storage /dev/loop0 117.9M 117.9M 0 100% / tmpfs 368.5M 0 368.5M 0% /dev/shm tmpfs 368.5M 5.8M 362.7M 2% /run tmpfs 368.5M 0 368.5M 0% /sys/fs/cgroup tmpfs 368.5M 0 368.5M 0% /tmp tmpfs 368.5M 240.0K 368.3M 0% /var

2) Is there any performance difference between the different size eMMC modules or is the 8GB just as fast as the large ones?

3) Is there a similar config.txt file for the C2 that allows output resolutions and other HDMI parameters to be forced at boot?

@1 Presumably

@2 AFAIK there are no speed differences depending on size

@3 Haven't got the faintest idea

HTH

Greetz,

_J@n_

Verstuurd vanaf mijn YOGA Tablet 2-1050F met Tapatalk

pajretX · 2016-12-27, 20:53

@3 There's a file called boot.ini https://github.com/LibreELEC/LibreELEC.t...r/boot.ini

Stereodude · 2016-12-27, 21:30

(2016-12-27, 20:53)pajretX Wrote: @3 There's a file called boot.ini https://github.com/LibreELEC/LibreELEC.t...r/boot.ini

Hmmm... It looks like it only supports some CEA display modes, not any DMT modes. My monitor is 1920x1200@60Hz which isn't one of the choices. Does it also support DMT display modes? Can it output them at boot?

BTW, thanks for the replies guys.

Locutus · (This post was last modified: 2016-12-27, 22:43 by Locutus.)

hi guys, i have a problem with my odroid c2 and passthrough. I am running a Panasonic Plasma and a Denon AVRX2200WBKE2 7.1 . With my RPi3 i have absolutely no problem with passthrough. But with the C2 i only get stereo sound on my TV (yes, on the tv, if i mute the integrated speakers, complete silence). The Denon get's no sound at all. The c2 is connected via HDMI with the Denon Receiver so is the TV. Any suggestions? Thx

pajretX · 2016-12-27, 23:09

Which device have you got selected in sound settings? The default one or the HDMI one?

Locutus · 2016-12-28, 00:04

problem solved... it helps if i turn my Denon off and on again when tv and odroid with kodi loaded are already running. after that passthrough works as it should. with the rpi3 this procedure was not needed. thanks for help anyway!

afremont · 2016-12-28, 00:32

Did you try unplugging and plugging the HDMI cable? That might help the devs narrow down the problem.

Sent from my Moto G (4)

wrxtasy · 2016-12-28, 00:47

(2016-12-27, 18:39)Stereodude Wrote: I'm thinking about replacing one of my Raspberry Pi 3's with a ODROID C2, but have a few questions.

1) If my rPi 3 has this sort of disk usage of the uSD with LE Jarvis, will the Odroid C2 running LE Jarvis be about the same?

Code:
Filesystem Size Used Available Use% Mounted on devtmpfs 363.4M 0 363.4M 0% /dev /dev/mmcblk0p1 511.7M 127.8M 384.0M 25% /flash /dev/mmcblk0p2 28.4G 217.9M 28.2G 1% /storage /dev/loop0 117.9M 117.9M 0 100% / tmpfs 368.5M 0 368.5M 0% /dev/shm tmpfs 368.5M 5.8M 362.7M 2% /run tmpfs 368.5M 0 368.5M 0% /sys/fs/cgroup tmpfs 368.5M 0 368.5M 0% /tmp tmpfs 368.5M 240.0K 368.3M 0% /var

2) Is there any performance difference between the different size eMMC modules or is the 8GB just as fast as the large ones?

3) Is there a similar config.txt file for the C2 that allows output resolutions and other HDMI parameters to be forced at boot?

1) I have not looked in detail but the file system would be virtually the same. i.e. A FAT32 Partition and then Linux.

2) Yes write speeds of the 16GB Samsung eMMC are double those of the 8GB modules.
http://odroid.com/dokuwiki/doku.php?id=e...ence_chart

3) Yes the boot.ini allows standard resolutions, you can also force other resolutions with Kodi via some simple scripting in the autostart.sh file, details:
http://forum.odroid.com/viewtopic.php?f=...00#p163752

aiko · 2016-12-28, 00:59

Decided to switch over from the RPi3 as I'm looking for better audio passthrough support and HEVC decoding.

So far very impressed, but I have one problem.

I can't seem to play 10-bit H265 HEVC encoded content? My TV doesn't support 8-bit, but my understanding from reading these posts is that the Odroid C2 with LE should decode 10bit H.265 content and output it as 8-bit.

I've tried two different files that are 10-bit HEVC encoded and both of them play with audio, but I'm just left with a black screen and no video. The videos do play fine on my computer using Media Player Classic - so no problems with the content itself.

I was advised on the odroid forum to try running the following from the CLI

echo 16 > /sys/module/amvdec_h265/parameters/dynamic_buf_num_margin

I did that, but it had no effect.

I'm running the LibreElec dec 7th fixed image posted at the top of this thread.

Stereodude · 2016-12-28, 06:54

(2016-12-28, 00:47)wrxtasy Wrote: 2) Yes write speeds of the 16GB Samsung eMMC are double those of the 8GB modules.
http://odroid.com/dokuwiki/doku.php?id=e...ence_chart

3) Yes the boot.ini allows standard resolutions, you can also force other resolutions with Kodi via some simple scripting in the autostart.sh file, details:
http://forum.odroid.com/viewtopic.php?f=...00#p163752

Thanks for the reply. Unfortunately, it confirms my concerns. I also see the 32gB module is faster yet at writing. The eMMC modules are somewhat expensive per gB compared to uSD cards and SATA storage. Having to go 32gB to get peak performance drives up the cost of a C2 solution.

The HDMI output situation seems less than ideal also. My receiver doesn't pass EDID from the monitor fast enough for the rPi to see it on boot. I expect the C2 will have the same problem and it seems the workaround is far less clean than the rPi. Your link wasn't at all clear to me on how to override the EDID or a lack thereof. I see a patch to allow some sort of file based override, but I'd have to build the code base with the patch enabled right?

nickr · 2016-12-28, 07:10

The 16GB is certainly large enough and fast enough!

wrxtasy · (This post was last modified: 2016-12-28, 07:34 by wrxtasy.)

In reality most LibreELEC users is not writing large sized files to eMMC all the time. Kodi Artwork and thumbnails are Not massive multi MB files.

Fast Random 4K Read speed is the most important and for that even 8GB eMMC is more than adequate.

ilovebytes · 2016-12-28, 13:16

hey wrxtasy maybe you could give me a hint if this are the right sd cards for the c2 ?

https://www.amazon.de/gp/product/B00M55C...N6HB9Q3AKL
or
https://www.amazon.de/gp/product/B01E5D9...OC8DYXTQZJ

then i could try one of this

pajretX · 2016-12-28, 14:05

I've got the exact same Sandisk in my O-C2. Running LibreELEC (WRXTASY) Version: 7.1.1
Here's the test results (ran twice each):

hdparm -t /dev/mmcblk0p2
Timing buffered disk reads: 66 MB in 3.03 seconds = 21.77 MB/sec
Timing buffered disk reads: 66 MB in 3.03 seconds = 21.80 MB/sec

hdparm -T /dev/mmcblk0p2
Timing cached reads: 1734 MB in 2.00 seconds = 866.77 MB/sec
Timing cached reads: 1698 MB in 2.00 seconds = 848.43 MB/sec

and a 'dd' test:
dd if=/dev/zero of=/storage/test bs=8k count=10k; rm -f /storage/test
10240+0 records in
10240+0 records out
83886080 bytes (80.0MB) copied, 6.873140 seconds, 11.6MB/s

ilovebytes · 2016-12-28, 15:37

hi thanks for your results so i can check with mine - i got a kingston

hdparm -t /dev/mmcblk0p2:
Timing buffered disk reads: 62 MB in 3.05 seconds = 20.35 MB/sec
Timing buffered disk reads: 62 MB in 3.03 seconds = 20.45 MB/sec

hdparm -T /dev/mmcblk0p2:
Timing cached reads: 1338 MB in 2.00 seconds = 669.08 MB/sec
Timing cached reads: 1254 MB in 2.00 seconds = 626.27 MB/sec

and the dd test:
10240+0 records in
10240+0 records out
83886080 bytes (80.0MB) copied, 0.426000 seconds, 187.8MB/s

i don't think thats so bad - and not significantly slower then your sandisk so i still don't know if that explains why my c2 is not responsive at all Sad

well could it be my c2 got a hardwareproblem itself - that causes such unresponsivness ? the temperatures don't go over 59°C