wildfire
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Re: Raspberry Pi 4 Thread - general discussion

Sun Jul 21, 2019 2:09 pm

Roken wrote:
Sun Jul 21, 2019 2:02 pm
Even if I get 10 - 15C reduction I'll be happy. Current idling at 57C with no cooling at all.
The shim brings it down ~20'c lower when active. Mine is set for 65'c activate and 55'c switch off. As yourself my 4B/4 hovers around 57'c and when I tested the shim (activated all the time) the temperature never exceeded 40'c
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Re: Raspberry Pi 4 Thread - general discussion

Sun Jul 21, 2019 2:15 pm

cpc464 wrote:
Sun Jul 21, 2019 9:46 am
[...]

Looking for a big passive heat sink.

Jim
I think this could be worth a try: https://www.ebay.com/itm/New-CNC-Alumin ... 2321943875

What I like about this solution is, that you do not encapsulate all the heat dissipated by the other components (like power circuit, usb, ethernet chips) in a case, unlike the Flirc case does, which effectively would only help the SoC, while all the other components get roasted in the closed housing.

webbsmurfen
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Re: Raspberry Pi 4 Thread - general discussion

Sun Jul 21, 2019 2:40 pm

I will probably go for this one, with a lot of drilled holes in a case. Goal is to get temp below 80 when stressing the cpu/gpu

https://www.adafruit.com/product/3082

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Roken
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Re: Raspberry Pi 4 Thread - general discussion

Mon Jul 22, 2019 8:46 pm

wildfire wrote:
Sun Jul 21, 2019 2:09 pm
Roken wrote:
Sun Jul 21, 2019 2:02 pm
Even if I get 10 - 15C reduction I'll be happy. Current idling at 57C with no cooling at all.
The shim brings it down ~20'c lower when active. Mine is set for 65'c activate and 55'c switch off. As yourself my 4B/4 hovers around 57'c and when I tested the shim (activated all the time) the temperature never exceeded 40'c
Good to know, when it arrives (hoping for tomorrow - but no dispatch email yet)
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Re: Raspberry Pi 4 Thread - general discussion

Sat Jul 27, 2019 7:13 am

Just tried watching a YouTube video (720p) on my Pi4b in fullscreen 4kp30.
Not remotely impressed, the video was so laggy I was getting about 0.5fps and lots of screen tearing.
Only while fullscreen, when not fullscreen, the Pi happily played even 1080p content buttery smooth. (using Raspbian so cannot check 4k content)
I don't have this issue with 1080p60 fullscreen.

Is it just me here or does this happen for others. I thought the Pi was supposed to be capable of TWO simultaneous 4kp60 video streams (with Libreelec). That's extremely contrary to what I'm seeing, it won't even play 360P video in fullscreen on a 4K TV 😠
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Gavinmc42
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Re: Raspberry Pi 4 Thread - general discussion

Sat Jul 27, 2019 7:46 am

Just tried watching a YouTube video (720p) on my Pi4b in fullscreen 4kp30.
From inside Chromium?

One 4k60 or two 4k30 was the spec.
Just because the hardware can do it, does not mean the software can yet.

Fastest I think is the new Kodi, give that try.
Faster software then needs to be pushed back into the other stuff.
Last edited by Gavinmc42 on Sat Jul 27, 2019 10:58 am, edited 1 time in total.
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andrum99
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Re: Raspberry Pi 4 Thread - general discussion

Sat Jul 27, 2019 10:48 am

chuUK wrote:
Sat Jul 27, 2019 9:35 am
Imperf3kt wrote:
Sat Jul 27, 2019 7:13 am
Just tried watching a YouTube video (720p) on my Pi4b in fullscreen 4kp30.
Not remotely impressed, the video was so laggy I was getting about 0.5fps and lots of screen tearing.
Only while fullscreen, when not fullscreen, the Pi happily played even 1080p content buttery smooth. (using Raspbian so cannot check 4k content)
I don't have this issue with 1080p60 fullscreen.

Is it just me here or does this happen for others. I thought the Pi was supposed to be capable of TWO simultaneous 4kp60 video streams (with Libreelec). That's extremely contrary to what I'm seeing, it won't even play 360P video in fullscreen on a 4K TV 😠
Found the same this morning. Stuck at 360p with choppy sound and screen tearing. PoS
Settle down people. The Pi 4 has significantly different display hardware to all previous Pi's. This means the software is almost all new. It takes time to write this and get it working well in all situations. You just need to be patient.

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kennyc
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Re: Raspberry Pi 4 Thread - general discussion

Sat Jul 27, 2019 10:53 am

andrum99 wrote:
Sat Jul 27, 2019 10:48 am
chuUK wrote:
Sat Jul 27, 2019 9:35 am
Imperf3kt wrote:
Sat Jul 27, 2019 7:13 am
Just tried watching a YouTube video (720p) on my Pi4b in fullscreen 4kp30.
Not remotely impressed, the video was so laggy I was getting about 0.5fps and lots of screen tearing.
Only while fullscreen, when not fullscreen, the Pi happily played even 1080p content buttery smooth. (using Raspbian so cannot check 4k content)
I don't have this issue with 1080p60 fullscreen.

Is it just me here or does this happen for others. I thought the Pi was supposed to be capable of TWO simultaneous 4kp60 video streams (with Libreelec). That's extremely contrary to what I'm seeing, it won't even play 360P video in fullscreen on a 4K TV 😠
Found the same this morning. Stuck at 360p with choppy sound and screen tearing. PoS
Settle down people. The Pi 4 has significantly different display hardware to all previous Pi's. This means the software is almost all new. It takes time to write this and get it working well in all situations. You just need to be patient.
Yes This! Free software...almost free hardware.... It's not rocket science. :)
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Gavinmc42
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Re: Raspberry Pi 4 Thread - general discussion

Sat Jul 27, 2019 11:04 am

Yes This! Free software...almost free hardware.
And it does get fixed, probably faster than Windows does?
This is still a new SoC chip, 4 ARM A72's and a VC6.
Rocket science is a bit easier ;)
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jamesh
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Re: Raspberry Pi 4 Thread - general discussion

Sat Jul 27, 2019 3:28 pm

Imperf3kt wrote:
Sat Jul 27, 2019 7:13 am
Just tried watching a YouTube video (720p) on my Pi4b in fullscreen 4kp30.
Not remotely impressed, the video was so laggy I was getting about 0.5fps and lots of screen tearing.
Only while fullscreen, when not fullscreen, the Pi happily played even 1080p content buttery smooth. (using Raspbian so cannot check 4k content)
I don't have this issue with 1080p60 fullscreen.

Is it just me here or does this happen for others. I thought the Pi was supposed to be capable of TWO simultaneous 4kp60 video streams (with Libreelec). That's extremely contrary to what I'm seeing, it won't even play 360P video in fullscreen on a 4K TV 😠
(As others, twin 4kp30, or single 4kp60. p60 needs to be specifically enabled in config.txt as it's quite power hungry)


The playback problems are very odd, works in my testing. Anything unusual in your setup?
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bensimmo
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Re: Raspberry Pi 4 Thread - general discussion

Sat Jul 27, 2019 4:14 pm

so the upscaling has a problem at 720p resolution and lower?

Downscaling 4k content to 1080 (Amazon) was fine for me a week or so ago.
(much better once it had a fan and didn't throttle )
That was in Vivaldi/widevine
i don't have a 4k TV to test upscaling to it with.

any particular links for other to check?

Why Raspbian stop you trying 4K content?

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Imperf3kt
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Re: Raspberry Pi 4 Thread - general discussion

Sat Jul 27, 2019 9:43 pm

bensimmo wrote:
Sat Jul 27, 2019 4:14 pm
so the upscaling has a problem at 720p resolution and lower?
No, it has issues at all resolutions, but only when using a 4k TV. No such issues on a 1080p60TV
bensimmo wrote:
Sat Jul 27, 2019 4:14 pm
Downscaling 4k content to 1080 (Amazon) was fine for me a week or so ago.
(much better once it had a fan and didn't throttle )
I'm experiencing no throttling even without a fan. Temperature never rises past ~68
bensimmo wrote:
Sat Jul 27, 2019 4:14 pm
any particular links for other to check?
Just jump on youtube and select any video, its not the 4k thats an issue, its when used fullscreen on a 4kTV. On the same TV, when not playing the video in fullscreen, it works flawlessly.
bensimmo wrote:
Sat Jul 27, 2019 4:14 pm
Why Raspbian stop you trying 4K content?
Because there is no 4K option while using Raspbian. I believe its because currently, only Libre Elec is supposed to be able to display 4K content.

In any case, no, nothing unusual about my setup.
Sandisk 64GB A1 micro SD card running the latest Raspbian Buster on a Pi4B 2GB using Chromium as the browser.
Official MicroHDMI to HDMI cable connected to 4KTV with wireless keyboard and mouse.
Using the official (2.5A with adaptor) power supply. get_throttled returns 0x0

Nothing else attached or installed.
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Re: Raspberry Pi 4 Thread - general discussion

Sat Jul 27, 2019 11:31 pm

Sandisk 64GB A1 micro SD card running the latest Raspbian Buster on a Pi4B 2GB using Chromium as the browser.
Are you watching the video via Chromium? That still has issues at 4K60.
Chromium has more overheads than a a video player.

I found Chromium works a bit better on my 4B1 if I increase the swap file, from 100MB to 1000MB.
I'm using the same uSD but I don't have a 4K screen to test it.
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Re: Raspberry Pi 4 Thread - general discussion

Mon Jul 29, 2019 7:50 pm

Gavinmc42 wrote:
Sat Jul 27, 2019 11:31 pm
Sandisk 64GB A1 micro SD card running the latest Raspbian Buster on a Pi4B 2GB using Chromium as the browser.
Are you watching the video via Chromium? That still has issues at 4K60.
Chromium has more overheads than a a video player.

I found Chromium works a bit better on my 4B1 if I increase the swap file, from 100MB to 1000MB.
I'm using the same uSD but I don't have a 4K screen to test it.
I doubt the swap is being used.
On my 4GB version htop showed the swap as 0 with Amazon UHD content playing fullscreen in the background (output of course for me downscaled to 1080p but the stream was 4K) this is Raspbian/Vivaldi browser, various other program, office sheets and a intense calculation bench running at the same time.
It only tipped at 1.4GB usage iirc.

2GB should be plenty.


I can't test his problem here, I'd need to go find a posh UHD TV, not these old fashioned HD things I have.

That's a nice quality setup being used :-)

Best left to the Engineers.

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kennyc
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Re: Raspberry Pi 4 Thread - general discussion

Mon Jul 29, 2019 8:00 pm

bensimmo wrote:
Mon Jul 29, 2019 7:50 pm
Gavinmc42 wrote:
Sat Jul 27, 2019 11:31 pm
Sandisk 64GB A1 micro SD card running the latest Raspbian Buster on a Pi4B 2GB using Chromium as the browser.
Are you watching the video via Chromium? That still has issues at 4K60.
Chromium has more overheads than a a video player.

I found Chromium works a bit better on my 4B1 if I increase the swap file, from 100MB to 1000MB.
I'm using the same uSD but I don't have a 4K screen to test it.
I doubt the swap is being used.
On my 4GB version htop showed the swap as 0 with Amazon UHD content playing fullscreen in the background (output of course for me downscaled to 1080p but the stream was 4K) this is Raspbian/Vivaldi browser, various other program, office sheets and a intense calculation bench running at the same time.
It only tipped at 1.4GB usage iirc.

2GB should be plenty.


I can't test his problem here, I'd need to go find a posh UHD TV, not these old fashioned HD things I have.

That's a nice quality setup being used :-)

Best left to the Engineers.
No need to doubt or guess about the swap.... just bring up 'top' and watch.... It was certainly an issue for me on the 1Gb Pi 4 with only a few tabs - Google News, Mail, Tune-in, The Conversation...

with the 4Gb model the swap is not being used so there you are right in my case and I know because I watched it directly in 'top'
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pi-tastic
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Re: Raspberry Pi 4 Thread - general discussion

Mon Jul 29, 2019 8:51 pm

Imperf3kt wrote:
Sat Jul 27, 2019 7:13 am
Just tried watching a YouTube video (720p) on my Pi4b in fullscreen 4kp30.
Not remotely impressed, the video was so laggy I was getting about 0.5fps and lots of screen tearing.
Only while fullscreen, when not fullscreen, the Pi happily played even 1080p content buttery smooth. (using Raspbian so cannot check 4k content)
I don't have this issue with 1080p60 fullscreen.

Is it just me here or does this happen for others. I thought the Pi was supposed to be capable of TWO simultaneous 4kp60 video streams (with Libreelec). That's extremely contrary to what I'm seeing, it won't even play 360P video in fullscreen on a 4K TV 😠

I have herd of this too!
do you have the 4gb version?

a comment said this hardware is almost free? where can you get a free pi? i would like to get one.

if i am lucky to get a 4gb version for $55 i still have to buy a Proper Power Supply for it witch is +10, and a SD card for it, because usb booting is not turned on yet, +15. and i do not own any thing that takes Micro HDMI to hdmi full size, witch it looks like i can get an adapter for +12, well make that (2), +12, (I mean why not enjoy dual screen) Plus I need a Keyboard the One they sell that goes with this looks like its +18, and who wants a bare PCB on the desk? +8 for a case. Not to mention you need a computer to image your sd card +400 +/-, How much does (2) 4k screens cost? +600 +/- and lets not forget about the official mouse +10

I could add all that up for you, but I think you are smart enough to see its surly not free.

Free software? well once you add all those hardware costs up, you are into notebook\netbook quad core x86 systems now with a W10 pro lic included. So its perfectly ok to have reasonable software/os functionality expectations for something that is going cost you around a hundie when all is said and done.
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Re: Raspberry Pi 4 Thread - general discussion

Mon Jul 29, 2019 9:34 pm

You can buy preimaged cards, you don't need to buy a PC to do that. And you don't "have" to run dual displays or use a 4K displays. A TV for example will do just fine. Just saying. :roll:

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rpdom
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Re: Raspberry Pi 4 Thread - general discussion

Tue Jul 30, 2019 7:31 am

You don't need to use the official keyboard or mouse. Most USB keyboards and meeces will work with the Pi.

The rest of your post sounds like a bit of a rant, but I'll just ignore you being "surly" ;-)

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Re: Raspberry Pi 4 Thread - general discussion

Tue Jul 30, 2019 10:54 am

pi-tastic wrote:
Mon Jul 29, 2019 8:51 pm
Not to mention you need a computer to image your sd card +400 +/-,
No PC needed to image your SD card, just use your android phone with my app :
https://www.raspberrypi.org/forums/view ... 3&t=170856

On stuttery chrome playback, try launching chromium from the command line
- hardware acceleration isn't enabled if you launch it from the menu or is that fixed now ?
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Re: Raspberry Pi 4 Thread - general discussion

Tue Jul 30, 2019 11:10 am

pi-tastic wrote:
Mon Jul 29, 2019 8:51 pm
a comment said this hardware is almost free? where can you get a free pi? i would like to get one.
...
I could add all that up for you, but I think you are smart enough to see its surly not free.
"Almost free" does not mean "free", but I think you are smart enough to know that.

Relative to spending a whole lot more money on something else "almost free" seems a reasonable comment to have made IMO. It is after all merely one person's opinion which others are entitled to disagree with.

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Re: Raspberry Pi 4 Thread - general discussion

Tue Jul 30, 2019 11:24 am

hippy wrote:
Tue Jul 30, 2019 11:10 am
pi-tastic wrote:
Mon Jul 29, 2019 8:51 pm
a comment said this hardware is almost free? where can you get a free pi? i would like to get one.
...
I could add all that up for you, but I think you are smart enough to see its surly not free.
"Almost free" does not mean "free", but I think you are smart enough to know that.

Relative to spending a whole lot more money on something else "almost free" seems a reasonable comment to have made IMO. It is after all merely one person's opinion which others are entitled to disagree with.
Yep.
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jamesh
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Re: Raspberry Pi 4 Thread - general discussion

Tue Jul 30, 2019 2:05 pm

mikerr wrote:
Tue Jul 30, 2019 10:54 am
pi-tastic wrote:
Mon Jul 29, 2019 8:51 pm
Not to mention you need a computer to image your sd card +400 +/-,
No PC needed to image your SD card, just use your android phone with my app :
https://www.raspberrypi.org/forums/view ... 3&t=170856

On stuttery chrome playback, try launching chromium from the command line
- hardware acceleration isn't enabled if you launch it from the menu or is that fixed now ?
I think that should be fixed now.
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achrn
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Re: Raspberry Pi 4 Thread - general discussion

Tue Jul 30, 2019 2:12 pm

pi-tastic wrote:
Mon Jul 29, 2019 8:51 pm
I could add all that up for you, but I think you are smart enough to see its surly not free.
Why not claim you need to buy a house to keep the Pi in so you can use it when it's raining? That would make about as much sense as the claims you're making, and then you could say that a Pi costs hundreds of thousands of pounds, which would surely make your argument all the more convincing!

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Re: Raspberry Pi 4 Thread - general discussion

Tue Jul 30, 2019 2:13 pm

Calm down everyone.
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takyon
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Re: Raspberry Pi 4 Thread - general discussion

Sat Aug 03, 2019 1:48 am

Since wishlist threads are frowned upon, I'll just put it here.

RasPi 5's GPU should have hardware support for AV1 decoding.

Not unlikely to happen since Broadcom is a member of the Alliance for Open Media.

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