Pi 3 B+ : 100Mbps instead of 1Gbps
December 21, 2023, 19:15
Hi,
I'm new to Raspberry and just got a second hand 3B+.
I checked Raspberry Pi website, and 3B+ should come with a Gigabit Ethernet Adapter (although it's locked to 300Mbps because is going through USB).
On my Pi3B+, the adapter is shown as a Fast Ethernet Adapter, thus allowing only 100Mbps.
I tried this on Debian12, Raspbian Bullseye, Ubuntu 23.10, and have the same thing.
Also, on the switch, it shows 1Gbps connectivity ...
Any idea ?
Regards,
Also, it should be a 3B+ as lscpu show it has a Cortex-A53 CPU.
Please post text as text and use text formatting.
ethtool is the tool for manipulating the eth port. Or it could be a bad ethernet cable?
just tried, message too long
it only shows support for 10Mbps and 100Mbps on the adapter, should show 1Gbps also
I agree
root in ~ 位 iperf3 -4 -c paris.testdebit.info -p 9200
Connecting to host paris.testdebit.info, port 9200
[ 5] local 192.168.1.253 port 57672 connected to 89.84.1.194 port 9200
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 11.8 MBytes 98.8 Mbits/sec 0 372 KBytes
[ 5] 1.00-2.00 sec 11.2 MBytes 94.4 Mbits/sec 0 372 KBytes
[ 5] 2.00-3.00 sec 11.0 MBytes 92.3 Mbits/sec 0 372 KBytes
[ 5] 3.00-4.00 sec 11.3 MBytes 94.9 Mbits/sec 0 372 KBytes
[ 5] 4.00-5.00 sec 11.2 MBytes 93.8 Mbits/sec 0 372 KBytes
[ 5] 5.00-6.00 sec 11.2 MBytes 94.3 Mbits/sec 0 372 KBytes
[ 5] 6.00-7.00 sec 11.4 MBytes 95.4 Mbits/sec 0 372 KBytes
[ 5] 7.00-8.00 sec 11.2 MBytes 93.8 Mbits/sec 0 372 KBytes
[ 5] 8.00-9.00 sec 11.2 MBytes 93.8 Mbits/sec 0 372 KBytes
[ 5] 9.00-10.00 sec 11.2 MBytes 94.3 Mbits/sec 0 372 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 113 MBytes 94.6 Mbits/sec 0 sender
[ 5] 0.00-10.02 sec 111 MBytes 93.2 Mbits/sec receiver
iperf Done.
root in ~ 位 lsusb
Bus 001 Device 004: ID 046d:c534 Logitech, Inc. Unifying Receiver
Bus 001 Device 003: ID 0424:ec00 Microchip Technology, Inc. (formerly SMSC) SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Microchip Technology, Inc. (formerly SMSC) SMC9514 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
root in ~ 位 ethtool eth0
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Supported pause frame use: Symmetric Receive-only
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Link partner advertised pause frame use: Symmetric
Link partner advertised auto-negotiation: Yes
Link partner advertised FEC modes: Not reported
Speed: 100Mb/s
Duplex: Full
Auto-negotiation: on
Port: Twisted Pair
PHYAD: 1
Transceiver: internal
MDI-X: Unknown
Supports Wake-on: pumbag
Wake-on: d
Current message level: 0x00000007 (7)
drv probe link
Link detected: yes
From my Raspberry Pi 3B+:
ethtool eth0
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: Symmetric Receive-only
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
what distro ?
and what does lsusb say ?
I run Debian Bullseye
lsusb Bus 001 Device 004: ID 152d:b567 JMicron Technology Corp. / JMicron USA Technology Corp. USB3.0 to SATA adapter Bus 001 Device 005: ID 0424:7800 Microchip Technology, Inc. (formerly SMSC) Bus 001 Device 003: ID 0424:2514 Microchip Technology, Inc. (formerly SMSC) USB 2.0 Hub Bus 001 Device 002: ID 0424:2514 Microchip Technology, Inc. (formerly SMSC) USB 2.0 Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Alright thanks.
And I run the 64bit OS
Right, so do I
I'm gonna have to pop it off the case and see what model is written on the PCB
I'll check it later.
In the meantime, if anyone as any other idea, I'd be happy to hear it 馃槃
Thanks <@796000224690307072> for your time
Check cat /proc/cpuinfo
That will show you the model
Hardware : BCM2835 Revision : a020d3 Serial : XXXXXXXXX Model : Raspberry Pi 3 Model B Plus Rev 1.3
root in ~ 位 cat /proc/cpuinfo
processor : 0
BogoMIPS : 38.40
Features : fp asimd evtstrm crc32 cpuid
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4
I just have this 4 times, nothing on the model
Strange
It is yes
I get:
cat /proc/cpuinfo processor : 0 BogoMIPS : 38.40 Features : fp asimd evtstrm crc32 cpuid CPU implementer : 0x41 CPU architecture: 8 CPU variant : 0x0 CPU part : 0xd03 CPU revision : 4 processor : 1 BogoMIPS : 38.40 Features : fp asimd evtstrm crc32 cpuid CPU implementer : 0x41 CPU architecture: 8 CPU variant : 0x0 CPU part : 0xd03 CPU revision : 4 processor : 2 BogoMIPS : 38.40 Features : fp asimd evtstrm crc32 cpuid CPU implementer : 0x41 CPU architecture: 8 CPU variant : 0x0 CPU part : 0xd03 CPU revision : 4 processor : 3 BogoMIPS : 38.40 Features : fp asimd evtstrm crc32 cpuid CPU implementer : 0x41 CPU architecture: 8 CPU variant : 0x0 CPU part : 0xd03 CPU revision : 4 Hardware : BCM2835 Revision : a020d3 Serial : xxxxxxxxxxxxxxxxxxxx Model : Raspberry Pi 3 Model B Plus Rev 1.3
Yeah, I don't have the last part
Ouch.
Corrupt image or SD card?
or try cat /proc/device-tree/model;echo
Found that in this forum posting and it state that the last command is more reliable, https://forums.raspberrypi.com/viewtopic.php?t=316807
root in ~ 位 cat /proc/device-tree/model;echo
Raspberry Pi 3 Model B Rev 1.2
alright
I also found a bug report on Raspberry Pi Foundation github discussing it. And one solution could be to update the firmware. But up to you.
vcgencmd version Mar 17 2023 10:52:42 Copyright (c) 2012 Broadcom version 82f3750a65fadae9a38077e3c2e217ad158c8d54 (clean) (release) (start)
I have to check the PCB to tell if it's a B or B+ first
Thanks for you findings
As your Model Raspberry Pi 3 Model B Rev 1.2 doesn't have a "plus" in it as I have Raspberry Pi 3 Model B Plus Rev 1.3 I should be quite sure that it is a Raspberry Pi 3 B
Yes so am I
But as I will have to return it, I prefer to be sure
and send the guy a picture of it
Agree
If I remember correct, the plus model have a metal cap on the MCU
yep, definitely the first one
I hope you can get the correct one. And I wish you god luck. Adn just ask if there is anything else, but you seems to be quite knowledgeable!
Right, I'm a network engineer, I know my way around linux, but rasp is a new platform for me ^^
Right, PCB tells the same thing as the linux command, so def a B not B+ ...