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by tvjon
Sun Jul 14, 2019 12:43 pm
Forum: Troubleshooting
Topic: Extremly Poor performance with tvout enabled
Replies: 11
Views: 445

Re: Extremly Poor performance with tvout enabled

.... which i cant test against w/ HDMI as my Micro cable wont be here for another day or so, Raspbian Buster takes upwards to 8 Mins to fully boot! ... Composite was my first sighting of booting Pi4 as the courier managed to take an unscheduled extra day to deliver my µHDMI cables too! Not 8 min's ...
by tvjon
Tue Jul 09, 2019 10:30 am
Forum: General discussion
Topic: Raspberry Pi 4 Dual Monitors
Replies: 39
Views: 2417

Re: Raspberry Pi 4 Dual Monitors

I see that arandr has has been updated, along with a firmware fix to re-enable Composite video on RPi3. ... No change in findings for pure hdmi connections, however... Is there further information available regarding the "less capable" HDMI1 output? I eliminated the possibility of a faulty Pi4 by t...
by tvjon
Thu Jul 04, 2019 9:40 am
Forum: General discussion
Topic: Raspberry Pi 4 Dual Monitors
Replies: 39
Views: 2417

Re: Raspberry Pi 4 Dual Monitors

Thank you for that insight. I imagine a lot of posts exist because their authors are unaware of just how much effort is required to overcome what are sometimes industry self inflicted problems.
by tvjon
Thu Jul 04, 2019 8:48 am
Forum: General discussion
Topic: Raspberry Pi 4 Dual Monitors
Replies: 39
Views: 2417

Re: Raspberry Pi 4 Dual Monitors

I see that arandr has has been updated, along with a firmware fix to re-enable Composite video on RPi3. So, having installed those, I`ve tried yet again connecting a second HDMI monitor to HDMI1. Select Screen Configuration. Both monitors are showing the desktop, but the wrong relative orientation f...
by tvjon
Tue Jul 02, 2019 2:17 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 - new VLI firmware issues
Replies: 58
Views: 6961

Re: Raspberry Pi 4 temperature

$ sudo hdparm -t /dev/sda1

/dev/sda1:
Timing buffered disk reads: 2 MB in 30.24 seconds = 67.73 kB/sec
by tvjon
Tue Jul 02, 2019 1:05 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 - new VLI firmware issues
Replies: 58
Views: 6961

Re: Raspberry Pi 4 temperature

jdb wrote:
Tue Jul 02, 2019 12:38 pm
Are there any errors in dmesg after the drive's been accessed in a slow fashion?
by tvjon
Tue Jul 02, 2019 11:54 am
Forum: Troubleshooting
Topic: Raspberry Pi 4 - new VLI firmware issues
Replies: 58
Views: 6961

Re: Raspberry Pi 4 temperature

It seems to vary wildly with the drive! Toshiba 2.5" integrated USB3: /dev/sdb1: LABEL="tosh" UUID="72ACD728ACD3E61F" TYPE="ntfs" PTTYPE="atari" PARTUUID="9235e1ef-01" $ sudo hdparm -t /dev/sdb1 /dev/sdb1: Timing buffered disk reads: 314 MB in 3.01 seconds = 104.44 MB/sec Seagate Barracuda 3.5" (muc...
by tvjon
Tue Jul 02, 2019 9:50 am
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 275
Views: 51793

Re: Raspberry Pi 4 temperature

For the past couple of years or so, I`ve had 2 RPi3b`s mounted vertically as in attached pic`. I recently replaced 1 of them with a Pi4 as I intend to do some big GCC builds with it. The next Pi4 I buy though will run with no heatsink or fan, & I do not anticipate any problems. $ vcgencmd measure_te...
by tvjon
Fri Jun 28, 2019 4:25 pm
Forum: Graphics, sound and multimedia
Topic: Buster+dpi screen+hdmi screen on 3b
Replies: 8
Views: 570

Re: Buster+dpi screen+hdmi screen on 3b

... DPI is not a detectable interface, therefore if you have added enable_dpi_lcd=1 in config.txt then it will be enabled. Yes, I understand that. The same goes for Composite, neither interface has any means of feedback to the interface, but just seems strange to say "default" when at least Pi does...
by tvjon
Fri Jun 28, 2019 1:30 pm
Forum: Other projects
Topic: New AirPlay Mirroring Server (Open Source)
Replies: 9
Views: 1251

Re: New Open Source AirPlay Mirroring Server

...Thanks for your feedback! Great to hear someone is using the program! You're welcome. In fact, I have some more. I was pondering whether to go to Github, or perhaps you'd prefer feedback here? Github obviously has mechanism in place for all this, but I suspect more people read the (sub) forums, ...
by tvjon
Fri Jun 28, 2019 11:28 am
Forum: Troubleshooting
Topic: Trouble Getting HDMI Output From RPi4
Replies: 43
Views: 2118

Re: Trouble Getting HDMI Output From RPi4

...Do I need to return this Pi while it is still within the returns policy? .. From my limited exposure to Pi4 so far (thanks to UPS) I'd say it's extremely unlikely to be the Pi4. You mention "Samsung TV". Does this TV have a composite input? Thanks to UPS again, I've initially used a 4 on a Samsu...
by tvjon
Fri Jun 28, 2019 9:36 am
Forum: General discussion
Topic: Charger compatibility with the Pi 4 (Single Type C CC resistor on Pi4)
Replies: 28
Views: 3080

Re: Charger compatibility with the Pi 4 (Single Type C CC resistor on Pi4)

One Qualcomm QC3.0 supply I have works fine, from either its USB A or C sockets. $ vcgencmd measure_temp temp=54.0'C $ vcgencmd measure_volts volt=0.8455V However an Anker psu also with 2 sockets, fails from its USB C output but using an USB-A to C lead works fine from its A socket. $ vcgencmd measu...
by tvjon
Thu Jun 27, 2019 8:57 am
Forum: Graphics, sound and multimedia
Topic: Buster+dpi screen+hdmi screen on 3b
Replies: 8
Views: 570

Re: Buster+dpi screen+hdmi screen on 3b

It appears that it's possible to lock oneself out using arandr. There are several permutations for the 2 screen (in my test case HDMI & DPI interface) setup. At least 1 of these means if the DPI screen is not present (perhaps someone borrowed it) there's no easy way to persuade PI3b to use what is c...
by tvjon
Tue Jun 25, 2019 10:03 pm
Forum: Graphics, sound and multimedia
Topic: Buster+dpi screen+hdmi screen on 3b
Replies: 8
Views: 570

Re: Buster+dpi screen+hdmi screen on 3b

... Did you add "max_framebuffers=2" to config.txt? It's the default for pi4, but not on earlier boards. Without that you will only ever get a single /dev/fbN. I didn't, but commenting out [Pi4] has now produced fb1 too, thank you. HDMI screen is about 1/4 occupied by a desktop picture, whilst DPI ...
by tvjon
Tue Jun 25, 2019 9:21 pm
Forum: Graphics, sound and multimedia
Topic: Buster+dpi screen+hdmi screen on 3b
Replies: 8
Views: 570

Re: Buster+dpi screen+hdmi screen on 3b

With 2 displays, the second to be initialised will show magenta instead of red in the top left for the rainbow screen. It should be that in legacy mode you get 2 framebuffer device (/dev/fb0 and /dev/fb1), and I would hope that display_default_lcd would swap them around. ... Useful to know, thank y...
by tvjon
Tue Jun 25, 2019 6:26 pm
Forum: Graphics, sound and multimedia
Topic: Buster+dpi screen+hdmi screen on 3b
Replies: 8
Views: 570

Buster+dpi screen+hdmi screen on 3b

Using the new Buster desktop image on this RPi3b results in odd behaviour... Extracted from /boot/config.txt # display_default_lcd=0 # #dtoverlay=vga666 # dtoverlay=dpi18 # enable_dpi_lcd=1 # dpi_group=2 # dpi_mode=39 [pi4] ... Every reboot results in the attached picture (note its colours) appearin...
by tvjon
Mon Jun 24, 2019 10:30 am
Forum: Graphics, sound and multimedia
Topic: Audacity/Microphone - Raspberry Pi 3.
Replies: 8
Views: 620

Re: Audacity/Microphone - Raspberry Pi 3.

"So sorry to get back to you slowly, Its been manic here just getting round to to your advice." Not to worry. I'm busy too :) Ctrl c to stop recording via the console command line. I only have experience of audacity on Rpi's. I have no wintel kit, only RPi's & iOS. As you can see from the attached s...
by tvjon
Tue Jun 18, 2019 7:20 am
Forum: Graphics, sound and multimedia
Topic: Fluidsynth and jackd on RPI3 (raspbian) - broken audio via headphone jack
Replies: 1
Views: 353

Re: Fluidsynth and jackd on RPI3 (raspbian) - broken audio via headphone jack

Hi, I am running raspbian and I want to use fluidsynth to make a portable midi setup to connect to my usb midi keyboard. ... I am running from text linux to minimize the latency, so I don't even start X server to use fluidsynth; but it seems that it is not enough I wouldn't use jackd for that job. ...
by tvjon
Mon Jun 17, 2019 12:42 pm
Forum: Graphics, sound and multimedia
Topic: Audacity/Microphone - Raspberry Pi 3.
Replies: 8
Views: 620

Re: Audacity/Microphone - Raspberry Pi 3.

...t is an proper good investment - i know i was looking at buying some Pi cameras so kids could build and code a security system that emails photos on detection - the PS3 camera (might) be able to do similar. ... Well, that's the point really. Some of the folk I encounter don't have 2 (half) penni...
by tvjon
Mon Jun 17, 2019 10:58 am
Forum: Graphics, sound and multimedia
Topic: Audacity/Microphone - Raspberry Pi 3.
Replies: 8
Views: 620

Re: Audacity/Microphone - Raspberry Pi 3.

"So I have 20 Raspberry Pi that i use with kids for mostly Programming and STEM learning. I am running a summer camp in mid July and want to teach kids to record..." Sounds good! I would think about future projects with the children, & instead buy (now) cheap Sony PS3 usb webcams, & for your current...
by tvjon
Sun Jun 16, 2019 7:58 pm
Forum: Troubleshooting
Topic: Espeak alsa issue
Replies: 7
Views: 432

Re: Espeak alsa issue

Hlo iamnaresh I am doing project on raspberry pi 3 b+ and I just installed raspbian stretch .... I installed espeak by the command "Sudo apt-get install espeak" ... For applications like this I tend to build from source rather than apt install. So I downloaded espeak-ng from: https://github.com/esp...
by tvjon
Wed Jun 12, 2019 5:26 pm
Forum: Other projects
Topic: New AirPlay Mirroring Server (Open Source)
Replies: 9
Views: 1251

Re: New Open Source AirPlay Mirroring Server

Thank you kindly for this. It built just fine, & I've just tested it with photo's from iOS 12.4 Next a video which is also fine, initially audio via HDMI. Next played another video, but no more audio. So, $ ./rpiplay -a analog & so far a couple of short videos, & audio is fine for both. Well done!
by tvjon
Fri May 24, 2019 11:04 am
Forum: Graphics, sound and multimedia
Topic: FBI is hardware accelerated?
Replies: 12
Views: 644

Re: FBI is hardware accelerated?

...The HW JPEG decoder isn't actually any faster than the faster ARM's on recent Pi's at decoding JPEG, once you take in the data transfers time to and from the GPU. That has not been my experience... Viewing the contents of a 30000+ folder of not too big photo's, Broadcom's jpeg decoder is signifi...
by tvjon
Tue May 21, 2019 2:59 pm
Forum: Beginners
Topic: Backing up the SDcard
Replies: 8
Views: 559

Re: Backing up the SDcard

Thanks, However, a second sdcard would work, too. There is only 1 microsd card reader on the raspberrry though, so I may have to find or purchase a second sdcard reader. Paul Having several µSD cards is a good idea I think. Unless you have a need to write & read SD cards, rather than µSD cards, I w...
by tvjon
Sun Apr 14, 2019 9:19 am
Forum: Beginners
Topic: How to connect a old keyboard to a PI?
Replies: 17
Views: 708

Re: How to connect a old keyboard to a PI?

"A couple of hours later I found it. "

Sounds like the same loft-organisation we have :)

@B.Goode - Likewise!

Actually I think many places call them keyboards.


Can you post a photo of all its sockets & if possible the make & model?

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