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by 180lifer
Tue Jul 07, 2020 1:24 pm
Forum: Troubleshooting
Topic: 2.5 gigabit ethernet USB3.0 adapter issues
Replies: 15
Views: 933

Re: 2.5 gigabit ethernet USB3.0 adapter issues

TL/DR what is the ultimate goal of the OP in using this 2.5GbE? and why is it important? Speed! Isn't it obvious? :lol: Seriously, this started out as a bonding project trying to bond two gigabit adapters (one built in, one USB3.0) together to form a faster pipe. But I have yet to figure out how to...
by 180lifer
Tue Jul 07, 2020 1:16 pm
Forum: Troubleshooting
Topic: 2.5 gigabit ethernet USB3.0 adapter issues
Replies: 15
Views: 933

Re: 2.5 gigabit ethernet USB3.0 adapter issues

SOME SUCCESS! Although not 2.5 gigabit, I am able to get about 1.55 gigabit (194MB/s) using Ubuntu Server 20.04 64-bit for the Pi. I think the speed increase over Raspi OS is due to Ubuntu being a more "normal" Linux and the drivers compiling and activating. Curiously, I get a faster speed using the...
by 180lifer
Tue Jul 07, 2020 1:05 pm
Forum: Troubleshooting
Topic: 2.5 gigabit ethernet USB3.0 adapter issues
Replies: 15
Views: 933

Re: 2.5 gigabit ethernet USB3.0 adapter issues

UPDATE The Zyxel 2.5 gigabit switch arrived and while I can get 290MB/s throughput from Linux computer to Linux computer via the switch I cannot get more than 1.25 gigabit with the Raspberry Pi 4 and the USB 2.5gb adapter based on the Realtek chip - specifically, the RTL8156. I have tried both the ...
by 180lifer
Tue Jul 07, 2020 1:26 am
Forum: Troubleshooting
Topic: 2.5 gigabit ethernet USB3.0 adapter issues
Replies: 15
Views: 933

Re: 2.5 gigabit ethernet USB3.0 adapter issues

UPDATE The Zyxel 2.5 gigabit switch arrived and while I can get 290MB/s throughput from Linux computer to Linux computer via the switch I cannot get more than 1.25 gigabit with the Raspberry Pi 4 and the USB 2.5gb adapter based on the Realtek chip - specifically, the RTL8156. I have tried both the 4...
by 180lifer
Fri Jul 03, 2020 5:38 am
Forum: Troubleshooting
Topic: 2.5 gigabit ethernet USB3.0 adapter issues
Replies: 15
Views: 933

Re: 2.5 gigabit ethernet USB3.0 adapter issues

In am very interested in these tests. Thanks for posting. I wonder why you don't get better speeds What does the CPU load look like during the test? Are all the 2.5 Gbit dongles based on the same r8152 chipset? Have you checked if the dongle causes low-voltage throttling on the Pi? I think trying t...
by 180lifer
Thu Jul 02, 2020 10:15 pm
Forum: Troubleshooting
Topic: 2.5 gigabit ethernet USB3.0 adapter issues
Replies: 15
Views: 933

Re: 2.5 gigabit ethernet USB3.0 adapter issues

fruitoftheloom No, I haven't tried 64-bit RPiOS beta yet. I have tried Ubuntu Server 20.04 64-bit for Pi, however. I didn't mention it in the initial post because I'm not completely done testing Ubuntu, but the results so far are the adapter eventually stops sending or responding to network traffic ...
by 180lifer
Thu Jul 02, 2020 9:00 pm
Forum: Troubleshooting
Topic: 2.5 gigabit ethernet USB3.0 adapter issues
Replies: 15
Views: 933

Re: 2.5 gigabit ethernet USB3.0 adapter issues

I fixed a few typos and added a couple of more lines of detail and summary after the initial posting so re-read it after July 2. USB is provided via an external VLI controller, connected over a single PCI Express Gen 2 lane, and providing a total of 4Gbps of bandwidth, shared between the four ports...
by 180lifer
Thu Jul 02, 2020 8:34 pm
Forum: Troubleshooting
Topic: 2.5 gigabit ethernet USB3.0 adapter issues
Replies: 15
Views: 933

Re: 2.5 gigabit ethernet USB3.0 adapter issues

I fixed a few typos and added a couple of more lines of detail and summary after the initial posting so re-read it after July 2.
by 180lifer
Thu Jul 02, 2020 8:28 pm
Forum: Troubleshooting
Topic: 2.5 gigabit ethernet USB3.0 adapter issues
Replies: 15
Views: 933

2.5 gigabit ethernet USB3.0 adapter issues

TL;DR I cannot get the Raspberry Pi 4 8GB model running Raspberry Pi OS (5-27-2020 release, fully updated) to reach anything close to 2.5 gigabit speed using two different USB3.0 adapters using the Realtek r8156 chipset. But I can get near 2.5 gigabit using the same adapters on other computers runni...
by 180lifer
Fri Sep 20, 2019 6:18 pm
Forum: Raspberry Pi OS
Topic: Raspbian download file size incorrect
Replies: 4
Views: 457

Raspbian download file size incorrect

On the official Raspbian downloads page the file size for “Buster with desktop and recommended software” states 1945 MB. But it actually is 2.43 GB when downloaded. The other two versions have the file size correctly shown. After verifying the SHA-256 I can confirm that on both macOS and Raspbian Bu...
by 180lifer
Tue Sep 10, 2019 12:56 am
Forum: Compute Module
Topic: PI 4 Compute module with pci-e?
Replies: 74
Views: 46621

Re: PI 4 Compute module with pci-e?

Maybe the next Pi (5?) will have a different form factor and more PCIe lanes. I’m not asking for official comment on this because we know the answer :) But, I think it’s clear both from the comments here and from the tinkering others are doing to expose the PCIe of the Pi 4 that interest is high, bo...
by 180lifer
Thu Sep 05, 2019 6:18 pm
Forum: Advanced users
Topic: Pi4 64-bit raspbian kernel for testing - Focus on Pi4
Replies: 357
Views: 146150

Re: Pi4 64-bit raspbian kernel for testing - Focus on Pi4

Since Raspbian is being converted to 64-bit (woohoo!!) does that mean Raspbian Desktop for PCs will become 64-bit as well? I have had trouble getting it to run in a virtual machine using VMware Workstation Player because (if I remember right) the 32-bit binaries confused the VM since the underlying ...
by 180lifer
Fri Mar 02, 2018 6:43 am
Forum: Official Foundation Display
Topic: Why wont hdmi work
Replies: 6
Views: 3142

Re: Why wont hdmi work

I've built a tablet with the official display and am considering installing a toggle switch on the positive power lead to the display driver board so that the display can be disabled when I need HDMI. I'll probably not switch the display off while the unit is powered up, but if a member of the Raspb...
by 180lifer
Fri Mar 02, 2018 5:42 am
Forum: Raspberry Pi OS
Topic: Raspbian Buster
Replies: 8
Views: 28715

Re: Raspbian Buster

In case you're curious where "Jessie", "Stretch", "Buster" and other names come from, they are the titles given to major releases of Debian which is the Linux distribution upon which our beloved Raspbian is based. Also, those names are characters from the movie Toy Story. Curiously, the "unstable" r...

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