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by FTrevorGowen
Tue Jul 16, 2019 8:49 pm
Forum: Raspbian
Topic: Don't want Raspian Buster!
Replies: 25
Views: 645

Re: Don't want Raspian Buster!

Actually, I use ubuntu 18.04 LTS. Presumably someone else is the admin who installed that for you (on what type of m/c)? I used to run Ubuntu on an Acer netbook - since I installed that myself obviously I had admin access. But, as previously indicated, if you've a working, but, maybe older, Linux (...
by FTrevorGowen
Tue Jul 16, 2019 8:20 pm
Forum: Raspbian
Topic: Don't want Raspian Buster!
Replies: 25
Views: 645

Re: Don't want Raspian Buster!

Yeah I use that when I can't use noobs, but I find using that is a pain as I am not an administrator, so I always need an administrtor around, which is why I use NOOBS instead of etcher. Why do you need to be an administrator? Eg. is that because you "need" to write to your uSDHC card for a Pi on a...
by FTrevorGowen
Tue Jul 16, 2019 8:02 pm
Forum: Advanced users
Topic: how to always mount USB drives in same location
Replies: 2
Views: 115

Re: how to always mount USB drives in same location

Running a Pi 3b+ with the latest non-noobs raspbian... I'm trying to find a way to mount the first USB drive inserted to the same location every time, regardless what USB it is. The main purpose is so I can reference this location in a program or script that will essentially transfer files to and f...
by FTrevorGowen
Tue Jul 16, 2019 2:03 pm
Forum: Troubleshooting
Topic: Buster & HDMI-to-VGA Converter results in "tvservice -s" reporting "state 0x120002 [TV is off]"
Replies: 0
Views: 87

Buster & HDMI-to-VGA Converter results in "tvservice -s" reporting "state 0x120002 [TV is off]"

(In part a follow up from this thread: https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=244568) Having cloned Buster from my P4B to re-test my four HDMI-to-VGA converters with a B+ and known working VGA monitor (used for all previous tests of Raspbian + Pi's, but, probably not with Jessie/Pix...
by FTrevorGowen
Fri Jul 12, 2019 10:42 pm
Forum: General discussion
Topic: Why is an old Raspberry Pi shown as manufactured by Legra Systems?
Replies: 5
Views: 448

Re: Why is an old Raspberry Pi shown as manufactured by Legra Systems?

The MAC address is 00:0F:00:72:FE:84. The only other device connected to the Pi (in addition to the USB-connected Dymo 330T LabelWriter) is a brand-new WiFi dongle from CanaKit (SKU: RSP-PI-WIFI1). Hope this helps! How is the Pi connected to the network? (If only by WiFi then I suspect that MAC add...
by FTrevorGowen
Fri Jul 05, 2019 7:23 pm
Forum: Troubleshooting
Topic: Persistent Display Settings? (Buster/P4B & some HDMI-to-VGA Converters)
Replies: 1
Views: 101

Re: Persistent Display Settings? (Buster/P4B & some HDMI-to-VGA Converters)

A bit of an update (work still "in progress"). Taking the P4B out of the "equation" I've attempted some further tests with an updated/upgraded version of Buster on a quite old B2 Pi (previous "quick test", via direct HDMI here: http://www.cpmspectrepi.uk/raspberry_pi/MoinMoinExport/RaspbianBusterB2Q...
by FTrevorGowen
Thu Jul 04, 2019 2:17 pm
Forum: General discussion
Topic: Just received my RPi4b/4GB - no HDMI output!!!
Replies: 75
Views: 3826

Re: Just received my RPi4b/4GB - no HDMI output!!!

... Also vga666 is blocking all Pi4 gpios. That should not be a "surprise" as a VGA666 board needs/uses most of them: http://www.cpmspectrepi.uk/raspberry_pi/MoinMoinExport/GertVga666Adapter.html http://www.cpmspectrepi.uk/raspberry_pi/MoinMoinExport/RaspiBplusVgaShieldV2p0.html (I've tested the se...
by FTrevorGowen
Wed Jul 03, 2019 5:33 pm
Forum: Troubleshooting
Topic: Persistent Display Settings? (Buster/P4B & some HDMI-to-VGA Converters)
Replies: 1
Views: 101

Persistent Display Settings? (Buster/P4B & some HDMI-to-VGA Converters)

This "issue" has come to light during further tests of display EDID parsing following on from discussions in this thread: https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=244431 Historically I had made some notes w.r.t. display setting "optimisation" etc. (http://www.cpmspectrepi.uk/raspberry...
by FTrevorGowen
Wed Jul 03, 2019 7:17 am
Forum: General discussion
Topic: Just received my RPi4b/4GB - no HDMI output!!!
Replies: 75
Views: 3826

Re: Just received my RPi4b/4GB - no HDMI output!!!

Please post raw edids, not parsed ones. I can take a raw edid and use hdmi_edid_file= to make a Pi think it has that monitor attached and see what is going on. There is no way to unparse a parsed one back into that form. edid-decode is the best supported parser I'm aware of. When I was searching, v...
by FTrevorGowen
Tue Jul 02, 2019 11:39 pm
Forum: General discussion
Topic: Just received my RPi4b/4GB - no HDMI output!!!
Replies: 75
Views: 3826

Re: Just received my RPi4b/4GB - no HDMI output!!!

Display setup is now two phase. The firmware starts up and deals with the rainbow screen and the very initial framebuffer. FKMS then starts and uses the display EDID to determine the supported modes, and it will select the mode it prefers. The firmware tries to direct this, but X totally ignores th...
by FTrevorGowen
Tue Jul 02, 2019 8:14 pm
Forum: General discussion
Topic: Just received my RPi4b/4GB - no HDMI output!!!
Replies: 75
Views: 3826

Re: Just received my RPi4b/4GB - no HDMI output!!!

So, tried again, with the 'safe mode' option, & whilst it seemed to be booting, continually moved the mouse, it first entered 640x480, then changed into 1280x768, (it doesn't do 1366x768in HDMI). So, Ive got it to boot once, at least - lets hope this has sorted out whatever the problem was when it ...
by FTrevorGowen
Tue Jul 02, 2019 4:40 pm
Forum: General discussion
Topic: Just received my RPi4b/4GB - no HDMI output!!!
Replies: 75
Views: 3826

Re: Just received my RPi4b/4GB - no HDMI output!!!

In addition to @jamesh's suggestions it may help if you can post some info. about the type of display the HDMI is "not working" with eg. true HDMI monitor, HDMI-DVI connected monitor, HDMI input on a TV ... and what Buster on your P3B+ reports about it. (Buster handles EDID info. differently to prev...
by FTrevorGowen
Tue Jul 02, 2019 4:21 pm
Forum: General discussion
Topic: Raspberry Pi 4 3D Model
Replies: 1
Views: 189

Re: Raspberry Pi 4 3D Model

Hi! This is my first time posting on the forums so sorry if this seems a bit weird. I am making a RetroPie project which involves the new Raspberry Pi 4 (I know it doesn't support it yet, but they probably will in a few weeks). I am putting the Pi 4 in a Gameboy case. I plan on making usb and ether...
by FTrevorGowen
Mon Jul 01, 2019 10:02 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Do GPIO output pins bounce?
Replies: 3
Views: 302

Re: Do GPIO output pins bounce?

... I do control 38V/1.5A led drivers powering a 5000lm led via two 24V IRF520 mosfets in series. GPIO13 is connected to SIG pin of both IRF520 modules. When Pi GPIO13 goes from high to low I would expect this: ‾‾‾‾‾‾‾‾|_______ What my 100MSps logic analyzer sometimesshows is this ‾‾‾‾‾‾‾‾|_|‾|____...
by FTrevorGowen
Mon Jul 01, 2019 9:18 am
Forum: Troubleshooting
Topic: STICKY: Setting up HDMI output when video output is wrong.
Replies: 541
Views: 944696

Re: STICKY: Setting up HDMI output when video output is wrong.

.. But also need to say that latest driver works with (wrong or) slightly incorrect EDID data which was not parsed by the old driver. I would also add that, AFAICT so far, some displays, probably mainly TV's / CEA mode devices, don't always pass on full/appropriate EDID info. esp. w.r.t. overscan/u...
by FTrevorGowen
Sun Jun 30, 2019 2:13 pm
Forum: Beginners
Topic: 64GB SD Card not booting in Pi 4
Replies: 6
Views: 317

Re: 64GB SD Card not booting in Pi 4

No problem at all. The output is 0353445350363447807b4312d1010200 and the card was bought from Amazon https://www.amazon.co.uk/gp/product/B00Q4X8OTQ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 That "translates" to: pi@raspiP4B4-32GbI:~/pi_tools_etc/usdcard_tools-0.0 $ ./src/cid_decoder -rawCID ...
by FTrevorGowen
Sun Jun 30, 2019 12:42 pm
Forum: Beginners
Topic: 64GB SD Card not booting in Pi 4
Replies: 6
Views: 317

Re: 64GB SD Card not booting in Pi 4

Thank you for a very quick and useful reply. I did as you suggested (I already had Etcher) and it's working great with the full Raspian Buster with desktop and recommended programs. It's good to make use of this old 64GB card. OOC, and, since I'm trying to acquire info. w.r.t. "older" uSDHC cards /...
by FTrevorGowen
Sun Jun 30, 2019 12:35 pm
Forum: General discussion
Topic: RPi3 -> RP4 migration
Replies: 3
Views: 292

Re: RPi3 -> RP4 migration

Hi. The new pi4 requires raspbian buster, so you need to download a copy to boot your new pi4. updating from raspbian stretch to raspbian buster is not recommended and may not work or cause unwanted results depending on your installed software. if you want to get data off your stretch SD card , wri...
by FTrevorGowen
Sun Jun 30, 2019 12:24 pm
Forum: General discussion
Topic: PI2 with USB boot or PI4 without still it will have it
Replies: 4
Views: 274

Re: PI2 with USB boot or PI4 without still it will have it

... If it is urgent to have USB Boot buy a RPi 3B+ https://www.raspberrypi.org/products/raspberry-pi-3-model-b-plus/ +1 as, since it is "already enabled", it's quite simple to clone** a working, uSDHC card-based system to a USB-based device one (and then you can use the card slot to check "unknown"...
by FTrevorGowen
Sat Jun 29, 2019 11:02 pm
Forum: General discussion
Topic: Not all RPI 4's are equal?
Replies: 34
Views: 2605

Re: Not all RPI 4's are equal?

How they can be identified?` Just to clarify perhaps: there's a difference between "identifying" the bootloader version installed in a given P4B's eeprom (which will need to be updated a some point by those folks wanting to USB boot when that's available in any case) or, what is usually called "fir...
by FTrevorGowen
Sat Jun 29, 2019 3:45 pm
Forum: General discussion
Topic: Testing official USB-C Power Supply rpi4.
Replies: 6
Views: 648

Re: Testing official USB-C Power Supply rpi4.

As promised, here's the link to where the graph etc. been posted within my webpages:
http://www.cpmspectrepi.uk/raspberry_pi ... ne_2019.29
by FTrevorGowen
Sat Jun 29, 2019 1:37 pm
Forum: Troubleshooting
Topic: Trouble Getting HDMI Output From RPi4
Replies: 43
Views: 2031

Re: Trouble Getting HDMI Output From RPi4

I think it has been stated elsewhere that the overscan settings are currently ignored for the new KMS display drivers, but they are looking into it. +1 I've had the same issue and logged it. AIUI it's more to do with Buster/current kernel etc. than a "P4B thing" (ie. it happened with Buster on a Pi...
by FTrevorGowen
Sat Jun 29, 2019 12:26 pm
Forum: General discussion
Topic: problems with raspberry pi 4b
Replies: 10
Views: 801

Re: problems with raspberry pi 4b

In my case, the RPI 4 does not boot at all. The red led is on and the green led blinks few times for about one second. After that the green light is off. I tried with a lot of different USB-C power supplies. However, I did yet have the official PSU for RPI 4. I will get that next week. Does RPI-4 w...
by FTrevorGowen
Fri Jun 28, 2019 10:48 pm
Forum: General discussion
Topic: Testing official USB-C Power Supply rpi4.
Replies: 6
Views: 648

Re: Testing official USB-C Power Supply rpi4.

FWIW, here's the graphical version:
OfficialRasPiP4BPSU.jpg
OfficialRasPiP4BPSU.jpg (131.04 KiB) Viewed 445 times
Trev.
by FTrevorGowen
Fri Jun 28, 2019 12:58 pm
Forum: General discussion
Topic: Testing official USB-C Power Supply rpi4.
Replies: 6
Views: 648

Re: Testing official USB-C Power Supply rpi4.

@RPIgoodSBC would you mind if I created a graphical form of your "imaged data" and added it to my sets of data for various PSU's here: http://www.cpmspectrepi.uk/raspberry_pi/MoinMoinExport/USBPowerSupplies.html#The_.22Official_Raspberry_Pi_PSU.22_.28All_Pi_Models.29 (With a "thank you" link back t...

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