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by HankB
Wed Sep 30, 2020 7:42 pm
Forum: Troubleshooting
Topic: Pi 4 fails to boot when active USB switch attached
Replies: 23
Views: 5431

Re: Pi 4 fails to boot when active USB switch or hub attached

Thanks for the reply and for looking into this far more deeply than I have. The critical thing that you do differently is "Normal cold power on procedure is to make all connections and then apply power to the hub" (my emphasis). The problem is that if there is a power cut and the power is then resto...
by HankB
Tue Sep 29, 2020 9:01 pm
Forum: Troubleshooting
Topic: Pi 4 fails to boot when active USB switch attached
Replies: 23
Views: 5431

Re: Pi 4 fails to boot when active USB switch attached

Hi all, I'm not clear if my configuration is susceptible to back-powering my Pi 4B. I have a powered hub (*) with 4 USB-3 type A ports. I connect the "input" of the hub to a USB-3 port on the Pi. That is the only USB port in use on the Pi. I connect an SSD, kepboard and unifying receiver to the hub....
by HankB
Mon Aug 24, 2020 6:31 pm
Forum: Troubleshooting
Topic: PI 4B video blanking
Replies: 18
Views: 1681

Re: PI 4B video blanking

Here's the deal man. I read every single post regarding this BS blanking issue. It SEEMS like people have solved it via editting the boot/config.txt. I tried every variation of those suggestions. ... Have you timed how long it takes to blank? If so, is this a regular time period or does it seem to ...
by HankB
Mon Aug 10, 2020 4:30 pm
Forum: General discussion
Topic: A warning about the new ELUTENG USB-SATA adapter. (for use with P3B)
Replies: 30
Views: 9335

Re: A warning about the new ELUTENG USB-SATA adapter.

Thanks for your efforts on this. I have recently purchased the new (blue SATA connector) adapter from Amazon after studying your post at https://www.raspberrypi.org/forums/viewtopic.php?t=260372. (4th post in thread.) I wonder if you could edit that post and reference this thread. Your post there se...
by HankB
Fri May 29, 2020 3:27 am
Forum: C/C++
Topic: Does Valgrind generally work on Raspbian?
Replies: 6
Views: 442

Re: Does Valgrind generally work on Raspbian?

Thanks, yes - that's what I found. I should look into some place to submit this as a bug (if not already submitted.) Edit.0: Now submitted at https://github.com/raspberrypi/tools/issues/112 Edit.1: That was not the correct place to report this issue but someone there pointed me to a different repo a...
by HankB
Fri May 29, 2020 12:50 am
Forum: C/C++
Topic: Does Valgrind generally work on Raspbian?
Replies: 6
Views: 442

Re: Does Valgrind generally work on Raspbian?

I'm curious what is different about your setup. It doesn't even work on the canonical "hello world" for me. hbarta@prelude:~/Programming/C++ $ cat hello.c #include <stdio.h> int main(int argc, char** argv) { printf("hello world\n"); return 0; } hbarta@prelude:~/Programming/C++ $ cc -o hello hello.c ...
by HankB
Thu May 28, 2020 10:30 pm
Forum: C/C++
Topic: Does Valgrind generally work on Raspbian?
Replies: 6
Views: 442

Re: Does Valgrind generally work on Raspbian?

Can you try a simpler example? hbarta@prelude:~/Programming/C++ $ cat hello.cpp #include <string> #include <iostream> int main( int args, char** argv) { std::string hello_world("hello world"); std::cout << hello_world << std::endl; return 0; } hbarta@prelude:~/Programming/C++ $ g++ -o hello hello.cp...
by HankB
Thu May 28, 2020 10:15 pm
Forum: C/C++
Topic: Does Valgrind generally work on Raspbian?
Replies: 6
Views: 442

Does Valgrind generally work on Raspbian?

I'm working on a project and have been developing on an X865 platform running Debian Buster. Occasionally I try different platforms to see if any bugs are evident due to variations in tool chain, architecture and so on. I just build my project on a Raspberry Pi 4 running an up to date Raspbian and `...
by HankB
Wed Jan 22, 2020 11:38 pm
Forum: General discussion
Topic: Raspbian Stretch Headless Setup Procedure
Replies: 76
Views: 261750

Re: Raspbian Stretch Headless Setup Procedure

Have a look at cmdline.txt on a freshly built (but not booted) system. There is a init= on the end that runs a script to do the resize. The script then removes that entry from the cmdline.txt. If you get rid of the init=... part it shouldn't try to resize when booted. Thanks! You saved me some digg...
by HankB
Wed Jan 22, 2020 4:33 pm
Forum: General discussion
Topic: Raspbian Stretch Headless Setup Procedure
Replies: 76
Views: 261750

Re: Raspbian Stretch Headless Setup Procedure

Hi all, I use this thread as a reference for what I need to put into "wpa_supplicant.conf". There has been a *lot* of discussion on this. I hope the first post continues to be maintained as the preferred format for that file. (But this is not the main reason I am posting.) I found something I don't ...
by HankB
Tue Nov 05, 2019 7:40 pm
Forum: Troubleshooting
Topic: STICKY: If you have a Raspberry Pi 4 and are getting bad speeds transferring data to/from USB3.0 SSDs, read this
Replies: 171
Views: 157427

Re: STICKY: If you have a Raspberry Pi 4 and are getting bad speeds transferring data to/from USB3.0 SSDs, read this

brcmfmac is the wireless driver, but that vc4_bo_allocation issue is indicating something is running out of memory. Are you fully up to date? (apt update && apt full-upgrade) You are also getting errors in multiple subsystems, is your power supply adequate? Fully up to date. I run `apt update` and ...
by HankB
Tue Nov 05, 2019 1:18 pm
Forum: Troubleshooting
Topic: STICKY: If you have a Raspberry Pi 4 and are getting bad speeds transferring data to/from USB3.0 SSDs, read this
Replies: 171
Views: 157427

Re: STICKY: If you have a Raspberry Pi 4 and are getting bad speeds transferring data to/from USB3.0 SSDs, read this

I had posted earlier that "works well" with the TNP adapter. Further experience has proved this wrong. I've been trying to run my Pi 4B from a SATA SSD (booting from an SD card) and it has not been stable, crashing within days. I have run it from an SD card for weeks w/out difficulty. I've added bac...
by HankB
Thu Aug 15, 2019 11:43 pm
Forum: Troubleshooting
Topic: STICKY: If you have a Raspberry Pi 4 and are getting bad speeds transferring data to/from USB3.0 SSDs, read this
Replies: 171
Views: 157427

Re: STICKY: If you have a Raspberry Pi 4 and are getting bad speeds transferring data to/from USB3.0 SSDs, read this

I'd like to reiterate the question asked above -- are there any *known good* UASP supported USB3.0<>SATA adapters for the Pi 4? I'm using the one in this post. It works fine with with my Pi 4B. https://www.raspberrypi.org/forums/viewtopic.php?t=246157#p1503225 I would have preferred an enclosure ra...
by HankB
Mon Jul 29, 2019 9:14 pm
Forum: Troubleshooting
Topic: PI 4B video blanking
Replies: 18
Views: 1681

Re: PI 4B video blanking

rpdom wrote:
Mon Jul 29, 2019 9:03 pm
Yes. That is the case. The raspberrypi-bootloader and raspberrypi-kernel packages contain the relevant files once they have been tested and deemed suitable for general release.
Great - Thanks!
by HankB
Mon Jul 29, 2019 7:11 pm
Forum: Troubleshooting
Topic: PI 4B video blanking
Replies: 18
Views: 1681

Re: PI 4B video blanking

(I tried to contact you off list as I've already suggested to another member not to post unrelated questions... I could not see how to do that.) Thanks for the correction. Unfortunately I'm confiused. I'm pretty sure that 6 years is longer than I've been playing with Raspberry Pis. (My first Pi was ...
by HankB
Mon Jul 29, 2019 6:46 pm
Forum: Troubleshooting
Topic: PI 4B video blanking
Replies: 18
Views: 1681

Re: PI 4B video blanking

rpi-update is the standard way to update firmware. I think that when the new firmware is ready for release, it will be available via rpi-update. I'm not aware that it is ready and I have seen posts that indicate it slows the USB3 ports. (https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=244421...
by HankB
Fri Jul 26, 2019 1:23 am
Forum: Advanced users
Topic: Running Raspbian from USB Devices : Made Easy
Replies: 316
Views: 117396

Re: Running Raspbian on USB Devices : Made Easy

... To that end, I think asking it to handle rare and specialized cases is beyond its scope. Hi RonR, I agree 100%. I don't think it is worth anyone's effort to modify the script to accommodate non-standard partitioning. What I did suggest was I would suggest adding a test to the script tro bail if...
by HankB
Thu Jul 25, 2019 9:35 pm
Forum: Troubleshooting
Topic: STICKY: If you have a Raspberry Pi 4 and are getting bad speeds transferring data to/from USB3.0 SSDs, read this
Replies: 171
Views: 157427

Re: STICKY: If you have a Raspberry Pi 4 and are getting bad speeds transferring data to/from USB3.0 SSDs, read this

Now my questions... It seems that the problem is with the SSD itself and the fix blacklists the USB3/SATA adapter, right? That means that if I use a different adapter for this SSD I will need to change the vendor:device ID in /boot/cmdline.txt. Likewise if I connect a different SSD to this adapter,...
by HankB
Thu Jul 25, 2019 9:31 pm
Forum: Advanced users
Topic: Running Raspbian from USB Devices : Made Easy
Replies: 316
Views: 117396

Re: Running Raspbian on USB Devices : Made Easy

Is anyone other than you running a Raspberry Pi with /home on a separate filesystem? :) I may be the only one. ;) usb-boot uses rsync to copy the contents of /dev/mmcblk0 to /dev/sdX (only when replicating the SD card to the USB device). If you know of an rsync option that will assist your situatio...
by HankB
Thu Jul 25, 2019 8:18 pm
Forum: Advanced users
Topic: Running Raspbian from USB Devices : Made Easy
Replies: 316
Views: 117396

Re: Running Raspbian on USB Devices : Made Easy

The script does not work so well if one has employed a seperate /home filesystem. It leaves /home on the SD card and fills the external drive with /. And it seems easy to make these unbootable when trying to resolve this, as I sit here staring at 4 raspbnerries on my screen. I would suggest adding a...
by HankB
Thu Jul 25, 2019 2:16 pm
Forum: Troubleshooting
Topic: STICKY: If you have a Raspberry Pi 4 and are getting bad speeds transferring data to/from USB3.0 SSDs, read this
Replies: 171
Views: 157427

Re: STICKY: If you have a Raspberry Pi 4 and are getting bad speeds transferring data to/from USB3.0 SSDs, read this

I ran into this using a Crucial M4 SSD (ancient in computer years ;) ) with a USB3 enclosure. It worked on USB2 but Raspbian did not even create the /dev entry when connected to a USB3 port. Applying the fix seens to have resolved this - Thanks! Now my questions... It seems that the problem is with ...
by HankB
Thu Jul 25, 2019 12:50 pm
Forum: Troubleshooting
Topic: (UPDATE) Drivers for TL-WN725N V2 - 3.6.11+ -> 4.xx.xx+
Replies: 1484
Views: 1439093

Re: (UPDATE) Drivers for TL-WN725N V2 - 3.6.11+ -> 4.xx.xx+

MrEngman wrote:
Thu Jul 25, 2019 10:45 am
The commits are from https://github.com/Hexxeh/rpi-firmware/commits/master. The full commits are 40 characters long but it is possible to reduce that to the first 9 or 10.
Thanks for explaining that.
by HankB
Thu Jul 25, 2019 4:02 am
Forum: Troubleshooting
Topic: (UPDATE) Drivers for TL-WN725N V2 - 3.6.11+ -> 4.xx.xx+
Replies: 1484
Views: 1439093

Re: (UPDATE) Drivers for TL-WN725N V2 - 3.6.11+ -> 4.xx.xx+

Thank you for providing this. I ran the script and the updated drivers did resolve the issue with my TP-Link WiFi adapter. I do have one question about this. I'm using these adapters on headless systems. Because of this it would be very useful to be able to update the driver before I reboot followin...
by HankB
Thu Jul 25, 2019 3:50 am
Forum: Troubleshooting
Topic: [Pi4B] hdmi_blanking=1 does not power down idle monitor
Replies: 3
Views: 511

Re: [Pi4B] hdmi_blanking=1 does not power down idle monitor

Thanks for the reply. Given a choice between getting the Pi4 now or waiting for every last little bit to be completed I'm happy to have it now and be patient for little bits like this.
by HankB
Wed Jul 24, 2019 9:51 pm
Forum: Troubleshooting
Topic: [Pi4B] hdmi_blanking=1 does not power down idle monitor
Replies: 3
Views: 511

[Pi4B] hdmi_blanking=1 does not power down idle monitor

Hi all, I'm driving a DVI monitor via micro-HDMI -> HDMI -> DVI adapter. I've added "hdmi_blanking=1" to /boot/config.txt but the monitor remains powered up when the screen blanks. With Raspbian/Stretch on older Pis (2B, 3B, 3B+) this worked to put the monitor into low power mode when the Pi blanked...

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