Well, mine works fine, but since I do SMD soldering professionally I'm going to check it anyway. One thing I don't like about this case is that inserting the board requires it to go into both micro HDMI inputs and the analog input all at once. This can't really ever line up completely, so it requires quite a bit of force to insert. Much more force than I would really like to use on HDMI micro connectors. I'm sure it could break solder joints.
craigr
I've used both HDMI ports on my Argon ONE M.2 Pi4B case without issue. The HDMI outputs are reversed from the Pi board. Looking from the back; output HDMI0 is far left, and HDMI1 is next to the USB-C power supply. HDMI0 supports up to 4K@60Hz (I'm using it) and HDMI1 only supports up to 4k@30Hz (I've proven it myself).
craigr
You may be surprised how well ordinary silicone sealant from the hardware store works. Use the absolute thinnest possible amount to minimize the insulative properties of the silicone. Epoxies work well too (and you can even buy expensive "thermally conductive" epoxy), but with epoxy you will never get the heat sink back off if you want to change it later.
If you are daring you can make very fine copper shavings to add to the silicone to make it more thermally conductive, but then it will also be electronically conductive so you must be certain it stays only on the top of the chip and doesn't ooze over the sides when you put the heat sink on.
There is also this stuff that I have never tried, but I suspect is identical to hardware store silicone:
Thermal Conductive Heatsink Plaster Viscous Adhesive Compound Glue For PC GPUSfi
Hainziye HY910 Thermal Grease CPU LED IC Heatsink Glue Plaster Paste Compound
Regards,
craigr
Display MoreHey Guys,
To add more, I installed a fresh LibreElec v10.0.0. I installed the add on Raspbery pi tools, System tools and Adafruit Librairies (not sure it helps) from the repos.
I installed the dedicated argon one libreelec script: "curl argonone-setup-libreelec.sh | bash"
It was obviously not working at first.
I only needed to update the "/storage/.config/system.d/argononed.service" and change the ExecStart line with this one : ExecStart=/bin/sh -c ". /etc/profile; exec /usr/bin/python /storage/.config/argononed.py".
Everything then went fine and I was able to manage the fan control through the config file.
Have Fun,
Damien.
When I do this, I get no fan at all at any temperature. Any ideas.
EDIT: Fan is working now with this config!
Display More1. Edit the argonone-config file on line 35, 36, and 37 to reflect:
echo 55"="10 >> $daemonconfigfile
echo 60"="55 >> $daemonconfigfile
echo 65"="100 >> $daemonconfigfile
2.Edit the argononed.py line 75 to reflect:/storage/.config directory
fanconfig = ["65=100", "60=55", "55=10"]
2. Create a sh file and name it autostart.sh and in that file copy and paste this script and save:
place file in /storage/.config directory
#!/bin/sh(
python /storage/.config/argononed.py
) &
3. Edit the argononed.service file in the /storage/.config/system.d directory and add this command to line 8:
ExecStart=/bin/sh -c ". /etc/profile; exec /usr/bin/python /storage/.config/argononed.py"
4. Go to terminal and test by running ./argononed-config
5. Fan will run at those values.
I also get no fan when applying this method 
Thanks,
craigr
I've seen a few posts where people recommend removing the coating from the heat sink contact pads. I did that, but I have a question for Argon ONE users. Do you find that the included heat sink pads, or actual heat sink compound works better? I haven't tried the pads yet, but I'm concerned that there could be too much space between the Pi SoC and RAM with compound. Perhaps a void the pads fill?
Thoughts?
craigr
So the Pi 4B has a green power LED, but all my other theater equipment has a blue LED when powered up. Like other equipment, I changed the SMD LED chip. I still may opt to disable the power LED again in settings.con, but for now I'll try this 
. Yes, I am totally nuts!
LOL,
craigr
Display MorePlease post the outputs of "modetest | pastebinit" and "pastekodi"- this will show what modes are available (and a copy of the edid).
Most sinks won't list 4kp50/60 modes at 4:4:4 in the EDID unless you enable "HDMI Deep Color" at the sink - then 4k 4:4:4 is limited to 30fps and only 4:2:0 (which the RPi doesn't support) 50/60fps are listed.
YCbCr 4:4:4 isn't supported in the driver either, the proposed kernel patch would add that along 4:2:2 as well.
IIRC all matrices and BT709/2020 colorspace signalling should be fine now.
so long,
Hias
BTW: also make sure you are using HDMI0 (the one next to the power connector on RPi4) - HDMI1 only supports up to 4kp30.
so long,
Hias
Sigh, wrong HDMI port 
. I thought that my version of the Argon ONE M.2 case kept the HDMI ports in the same order as the Pi board, but it does not. It turns out port zero is the one further from the USB slots on this case. I had to check the PCB traces to be sure.
These look correct.
All is good now except for the fact that's it's still RGB. But honestly I use 60Hz very rarely on Kodi so whatever. I'm much more keen to get YCbCr 422 support:
* I don't plan on running the GUI at 4K60Hz, I just wanted to test it. I'll switch the GUI back to 1080P60Hz and just whitelist 4K@60Hz for auto switching as needed.
I switched the GUI back to 1080p and then whitelisted 4k@60Hz. I played Billy Lynn's Long Halftime Walk and Kodi switched to [email protected] as expected.
Thanks so much for your help HiassofT I must say I am impressed that a LE developer would take time to answer a noob LE user's questions.
Very kind regards,
craigr
You have to grow the filesystem as well.
resize2fs /dev/sda2
DOH 
!
Thanks. I must have hit my head or something to have missed that 
craigr
YCbCr 4:2:2 is supported by the hardware but not implemented in the driver and/or kodi yet (a complicated story...). Eventually support should be added though.
To get 4kp50/60 output (at RGB 4:4:4) you need to add hdmi_enable_4kp60=1 to config.txt - the HDMI sink also needs to support that and signal it via EDID.
so long,
Hias
So I added the hdmi_enable_4kp60=1 in config.txt and still no 4K@60Hz. My EDID supports 4K@60 Hz for RGB and YCbCr 444/422. All other devices are set to YCbCr 422 or 444 and work fine. What do you mean by "...the HDMI sink also needs to support that..."?
I also added lines to disable the RP power LED in config.txt and that worked.
Another question... can I enable YCbCr 4:4:4 for 4k @2398 Hz and 1080p at 23.98 Hz and 59.94 Hz. I may be better off with YCbCr than RGB.
I have also read glints in posts and tickets that the wrong component color encoding matrix may have been used for Rec601, Rec709, and Rec2020, or that the same matrix may have been incorrectly used for all three gamuts. Do you know if this is true and if it was ever fixed?
Thanks once more,
craigr
YCbCr 4:2:2 is supported by the hardware but not implemented in the driver and/or kodi yet (a complicated story...). Eventually support should be added though.
To get 4kp50/60 output (at RGB 4:4:4) you need to add hdmi_enable_4kp60=1 to config.txt - the HDMI sink also needs to support that and signal it via EDID.
so long,
Hias
Thanks for the quick reply. Two follow up questions pleas:
Firstly, do you know if I could run Kodi on another Linux distribution (perhaps Raspbian) for 4:2:2 support now?
Second, could you please provide the location of the config.txt in LE 10.x? I thought I read that it had been moved and was unable to find it? It was late last night...
Best regards,
craigr
I am using the Aragon ONE M.2 RP 4 case and with it, the SSD drive is not seen as removable in Windows 10. So I used the "LibreELEC USB-SD Creator" to make an SD card to boot from on the RP 4. I had read that this was an installation disc, but I was never given the option to install LE to the SSD drive (I tried multiple times). The RP 4 simply would always boot into Kodi directly from the SD card.
So I used DD to clone the 64GB SD card to my 256GB SSD. I then used parted to expand the ~64GB partition to fill up the the remaining space. That was done successfully and the RP 4 boots LE off the SSD drive:
However, the Kodi GUI in system information reports the disc is still only 64GB. How can I get Kodi to see the entire proper partition size?
Thanks,
craigr
First off, I'm a video engineer so I'd like to please avoid this topic from turning into a discussion about which color space is best.
For my application YCbCr 4:2:2 is the best color space to feed my Lumagen RP video processor in my theater room. I have been running a ShieldTV for years which supports this, but there has always been one issue or another with either Android or the Nvidia Shield its self, so I decided to give LibreELEC a run. I keep an extra RP 4 around for experiments so after reading how well supported it is for LibreELEC I decided to give it a spin. I already had a 256GB SATA M.2 SSD from a laptop pull so naturally I bought the Aragon ONE M.2 case.
I must say for a budget option, or for any option, I am pretty impressed. However a huge lacking for my application is YCbCr 4:2:2 support. I have read rumblings that that the RP 4 hardware can support 4:2:2 and that it may become an option. Is this true and does anyone know if this may become a reality sometime in the not too distant future? Is there anyway to use it now?
*The reason 4:2:2 is best is that it is 12-bit and up samples the native encoding on BD and UHD-BD which is encoded at 4:2:0. The only format that can be lossless from the native disc encode at 24Hz into a Lumagen video processor is 4:2:2. The best image results from the Lumagen when there is no loss before the video signal is processed.
A final question unrelated. On LibreELEC 10.x the way to force certain resolutions to be supported has changed. Is there a way for me to be able to enable 4k@60 Hz with 10.3?
Kind regards and thanks,
craigr
