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by raspberry_user
Thu Nov 19, 2020 9:59 pm
Forum: Ubuntu
Topic: Why Pi4 restarts instead of shutdown under Ubuntu Desktop 20.10 for Pi?
Replies: 9
Views: 408

Re: Why Pi4 restarts instead of shutdown under Ubuntu Desktop 20.10 for Pi?

Normally the command is typed: sudo shutdown -h now The -h flag mean "halt" or stop. Cheers. Thanks but still it reboots itself. somethings wrong with your setup or you have something attached that's causing that. I have a PC running Ubuntu and I can shut it down with "sudo shutdown now". The only ...
by raspberry_user
Tue Nov 17, 2020 4:33 am
Forum: Ubuntu
Topic: Why Pi4 restarts instead of shutdown under Ubuntu Desktop 20.10 for Pi?
Replies: 9
Views: 408

Re: Why Pi4 restarts instead of shutdown under Ubuntu Desktop 20.10 for Pi?

The Traveler wrote:
Tue Nov 17, 2020 1:43 am
Normally the command is typed: sudo shutdown -h now

The -h flag mean "halt" or stop.

Cheers.
Thanks but still it reboots itself.
by raspberry_user
Tue Nov 17, 2020 12:50 am
Forum: Ubuntu
Topic: Why Pi4 restarts instead of shutdown under Ubuntu Desktop 20.10 for Pi?
Replies: 9
Views: 408

Why Pi4 restarts instead of shutdown under Ubuntu Desktop 20.10 for Pi?

Hi, I installed Ubuntu Desktop 20.10 for Pi on my Pi4. I noticed that even I issued "sudo shutdown now", the Pi4 just rebooted itself. What is wrong?
by raspberry_user
Tue Nov 03, 2020 3:06 am
Forum: Ubuntu
Topic: Which VNC is recommended?
Replies: 3
Views: 441

Which VNC is recommended?

Hi, I am running a headless Pi4 on Ubuntu 20.10 Desktop. Sometimes I want to connect the Pi to my Apple laptop and run X applications installed on the Pi4 on the Mac. Which VNC is recommended? Thank you
by raspberry_user
Mon Nov 02, 2020 2:56 pm
Forum: General discussion
Topic: Is it recommended to turn off the Pi4 after use?
Replies: 10
Views: 441

Re: Is it recommended to turn off the Pi4 after use?

Thanks. Is it still recommended to leave the Pi4 on 24/7 if it is attached to a SSD as the boot storage? I read that reading/writing many times could shorten the life of the SSD.
by raspberry_user
Fri Oct 30, 2020 5:27 pm
Forum: Beginners
Topic: Any good recommendation for very flexible USB 3.0 to USB-C cable or U-shaped adapter?
Replies: 4
Views: 223

Re: Any good recommendation for very flexible USB 3.0 to USB-C cable or U-shaped adapter?

bjtheone wrote:
Fri Oct 30, 2020 4:54 pm
I have seen drive mounting cases that used a tiny PCB with appropriate connectors to create a very short and robust U shaped adapter. You may be able to find an such an adaptor on Alibaba.
Have you seen such thing on Amazon? I am looking for one for Samsung T5 and one for NVMe.
by raspberry_user
Fri Oct 30, 2020 12:04 am
Forum: Beginners
Topic: Any good recommendation for very flexible USB 3.0 to USB-C cable or U-shaped adapter?
Replies: 4
Views: 223

Re: Any good recommendation for very flexible USB 3.0 to USB-C cable?

Hi, I want to put my SSD underneath the Pi4. I got some USB 3.0 to USB-C cables but they are long and not flexible enough. Any good recommendation for short, very flexible cable? Something like this short Amazon Basics cable (Red "AI" here: https://www.cpmspectrepi.uk/raspberry_pi/MoinMoinExport/Ex...
by raspberry_user
Thu Oct 29, 2020 9:37 pm
Forum: Beginners
Topic: Any good recommendation for very flexible USB 3.0 to USB-C cable or U-shaped adapter?
Replies: 4
Views: 223

Any good recommendation for very flexible USB 3.0 to USB-C cable or U-shaped adapter?

Hi, I want to put my SSD underneath the Pi4. I got some USB 3.0 to USB-C cables but they are long and not flexible enough. Any good recommendation for short, very flexible cable?
by raspberry_user
Mon Oct 26, 2020 4:17 pm
Forum: General discussion
Topic: What is the likelihood of getting a Pi4 with defective USB port?
Replies: 14
Views: 550

Re: What is the likelihood of getting a Pi4 with defective USB port?

How is your RPi powered? (fed with amps) What is connected to your RPi? Can you try to connect your mouse -and may be disks, USB sticks, keybeards with nice shiny LEDS, amaong funny greedy stuff- ) with a USB hub which has an independant source of power? Always powered by the official RPi power ada...
by raspberry_user
Mon Oct 26, 2020 4:15 pm
Forum: General discussion
Topic: What is the likelihood of getting a Pi4 with defective USB port?
Replies: 14
Views: 550

Re: What is the likelihood of getting a Pi4 with defective USB port?

richrussell wrote:
Mon Oct 26, 2020 3:52 pm
One thing to try is to get a different SD card and put a different OS on it to rule out this being a software issue. You don't mention which OS you're currently using.
Yes, I have done that already. At the beginning I used Rasbian with MicroSD card. Then, I switched to SSD with Ubuntu.
by raspberry_user
Mon Oct 26, 2020 3:10 pm
Forum: General discussion
Topic: What is the likelihood of getting a Pi4 with defective USB port?
Replies: 14
Views: 550

Re: What is the likelihood of getting a Pi4 with defective USB port?

DougieLawson wrote:
Mon Oct 26, 2020 2:24 pm
raspberry_user wrote:
Mon Oct 26, 2020 1:49 pm


Does the Pi4 has some kind of self-diagnostic function that user can perform a self-test?
There's no BIOS and no power on self test (POST) on any Raspberry beyond getting the firmware running.
Thank you
by raspberry_user
Mon Oct 26, 2020 2:17 pm
Forum: General discussion
Topic: Why there is no 16 or 32GB version of Pi4?
Replies: 26
Views: 1032

Re: Why there is no 16 or 32GB version of Pi4?

Given that some users want to use the Pi4 to replace a desktop PC, why the Pi4 has only a maximum RAM size of 8GB? Has the memory size selections of the Pi4 already been fixed and we need to wait for the next generation such as Pi4 B+ or Pi5? What is the expected wait months? There is no Memory Mod...
by raspberry_user
Mon Oct 26, 2020 1:55 pm
Forum: General discussion
Topic: Why there is no 16 or 32GB version of Pi4?
Replies: 26
Views: 1032

Why there is no 16 or 32GB version of Pi4?

Given that some users want to use the Pi4 to replace a desktop PC, why the Pi4 has only a maximum RAM size of 8GB? Has the memory size selections of the Pi4 already been fixed and we need to wait for the next generation such as Pi4 B+ or Pi5? What is the expected wait months?
by raspberry_user
Mon Oct 26, 2020 1:49 pm
Forum: General discussion
Topic: What is the likelihood of getting a Pi4 with defective USB port?
Replies: 14
Views: 550

Re: What is the likelihood of getting a Pi4 with defective USB port?

O.K. O.O.C. how old is it? USB 'A' plugs can wear and/or become "sloppy" and "plugs" tend to fail before sockets. Trev. Brand new. That is why I asked about the likelihood of getting a lemon. Very very low. But not impossible. Return it under warranty. Does the Pi4 has some kind of self-diagnostic ...
by raspberry_user
Mon Oct 26, 2020 1:28 am
Forum: Troubleshooting
Topic: Cannot install gcc-multilib
Replies: 8
Views: 9537

Re: Cannot install gcc-multilib

I know I am a few years late to the party but the short story is that there is nothing to fix; this is a feature to request raspberrian's maintainers nicely to add. I need to mention that this is not the best place to start, more later apt-get source gcc-multilib g++-multilib This said : If you're ...
by raspberry_user
Sun Oct 25, 2020 11:27 pm
Forum: General discussion
Topic: What is the likelihood of getting a Pi4 with defective USB port?
Replies: 14
Views: 550

Re: What is the likelihood of getting a Pi4 with defective USB port?

W.r.t. "for example a mouse" there have been reports RF interference problems with wireless (mouse) dongles (from poor quality HDMI cables IIRC) Trev. But I am using a wired mouse O.K. O.O.C. how old is it? USB 'A' plugs can wear and/or become "sloppy" and "plugs" tend to fail before sockets. Trev....
by raspberry_user
Sun Oct 25, 2020 8:42 pm
Forum: General discussion
Topic: What is the likelihood of getting a Pi4 with defective USB port?
Replies: 14
Views: 550

Re: What is the likelihood of getting a Pi4 with defective USB port?

FTrevorGowen wrote:
Sun Oct 25, 2020 8:39 pm
W.r.t. "for example a mouse" there have been reports RF interference problems with wireless (mouse) dongles (from poor quality HDMI cables IIRC)
Trev.
But I am using a wired mouse
by raspberry_user
Sun Oct 25, 2020 6:59 pm
Forum: General discussion
Topic: What is the likelihood of getting a Pi4 with defective USB port?
Replies: 14
Views: 550

What is the likelihood of getting a Pi4 with defective USB port?

Hi, I noticed that devices connected to the top USB2 port sometimes do not function properly. For example, as simple as a mouse, sometimes it works but sometimes it doesn't. What is the likelihood of getting a Pi4 with defective USB port?
by raspberry_user
Sun Oct 25, 2020 3:52 pm
Forum: Ubuntu
Topic: Why the P4's refreshing rate under 4K is 20 something Hz?
Replies: 15
Views: 623

Re: Why the P4's refreshing rate under 4K is 20 something Hz?

tearing on the Pi4 is a known issue and is worked on Is it a software or hardware issue? I read that one of the I2C channels is assigned to HDMI. Does enabling 4K 60Hz slow down the CPU or other I2C channels? I think they are independent rather than shared bus. Probably a processor power limitation...
by raspberry_user
Sun Oct 25, 2020 3:00 pm
Forum: Ubuntu
Topic: Why the P4's refreshing rate under 4K is 20 something Hz?
Replies: 15
Views: 623

Re: Why the P4's refreshing rate under 4K is 20 something Hz?

Have you added 'hdmi_enable_4kp60=1' to your config.txt Thank you. After adding it and rebooting, I see 60Hz available under Settings. I chose it and clicked Apply. How come when I drag a window across the screen, it is still not smooth but sluggish? I can see it being refreshed. tearing on the Pi4...
by raspberry_user
Sun Oct 25, 2020 2:31 pm
Forum: General discussion
Topic: Any update on SanDisk A2 support on the Pi4 ?
Replies: 47
Views: 1819

Re: Any update on SanDisk A2 support on the Pi4 ?

read the link I added, it is comparable to the 850, and the interface saturates the bus, uses ASmedia. Run some benchmarks to check it is using UASP*, enable TRIM etc. * lsusb -t check Driver = uas on the drive FTFY. 8-) ubs = United Bible Societies. Or Union Bank of Switzerland. But then usb = uni...
by raspberry_user
Sun Oct 25, 2020 2:24 pm
Forum: Ubuntu
Topic: Why the P4's refreshing rate under 4K is 20 something Hz?
Replies: 15
Views: 623

Re: Why the P4's refreshing rate under 4K is 20 something Hz?

aBUGSworstnightmare wrote:
Sun Oct 25, 2020 2:10 pm
Have you added 'hdmi_enable_4kp60=1' to your config.txt
Thank you. After adding it and rebooting, I see 60Hz available under Settings. I chose it and clicked Apply. How come when I drag a window across the screen, it is still not smooth but sluggish? I can see it being refreshed.
by raspberry_user
Sun Oct 25, 2020 1:12 pm
Forum: Ubuntu
Topic: Why the P4's refreshing rate under 4K is 20 something Hz?
Replies: 15
Views: 623

Re: Why the P4's refreshing rate under 4K is 20 something Hz?

thatchunkylad198966 wrote:
Sun Oct 25, 2020 1:04 pm
How are you monitoring the refresh rate?
60Hz. I play 4K games on PC, no problem.
by raspberry_user
Sun Oct 25, 2020 1:11 pm
Forum: General discussion
Topic: Any update on SanDisk A2 support on the Pi4 ?
Replies: 47
Views: 1819

Re: Any update on SanDisk A2 support on the Pi4 ?

Probably a delay at bootup? what is actual use like. The T5 is an SSD with a USB3 to whatever is inside convertor. 6 seconds on an already pretty fast time for my Pi4 is quite quick, the PCU still has to do a lot of work running the code. It's why PC games don't benefit a lot from a slow SSD to a v...

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