HugoMartins
Posts: 3
Joined: Fri Jun 15, 2012 1:56 pm

Problem with network eth0: kevent 0

Fri Jun 15, 2012 2:05 pm

After a few hours my device loses connection to the network and got the following error in syslog file:

smsc95xx 1-1.1:1.0: eth0: kevent 0 may have been dropped :cry:

what can I do to resolve this problem?

marsman2020
Posts: 72
Joined: Sun May 20, 2012 11:26 pm

Re: Problem with network eth0: kevent 0

Fri Jun 15, 2012 2:58 pm

What is the make/model/specs of the power supply you are using to power your Pi?

What USB devices (including hubs) do you have attached?

Is the network dropping in the console or in X/LXDE?

HugoMartins
Posts: 3
Joined: Fri Jun 15, 2012 1:56 pm

Re: Problem with network eth0: kevent 0

Fri Jun 15, 2012 3:26 pm

Power supply with Samsung travel adapter 5V 700mA.

2 USB peripherals, USB Keyboard and USB/RS232 converter, connected directly to Raspberry.

It's the same problem with peripherals conected to HUB (powered externally) .

The network dropping in console mode.

HugoMartins
Posts: 3
Joined: Fri Jun 15, 2012 1:56 pm

Re: Problem with network eth0: kevent 0

Thu Jun 21, 2012 3:40 pm

Can someone help?

Continues to happen several times a day.

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RaTTuS
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Re: Problem with network eth0: kevent 0

Thu Jun 21, 2012 3:53 pm

remove the keyboard and try again
what make and model of keyboard is it
try a better / another PSU
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Re: Problem with network eth0: kevent 0

Thu Jun 21, 2012 4:06 pm

Do you have:
vm.min_free_kbytes = 8192
in your /etc/sysctl.conf. Can you try with a larger value.

If not, then a firmware update could help:
http://elinux.org/R-Pi_Troubleshooting# ... g_firmware

RAThomas
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Re: Problem with network eth0: kevent 0

Wed Jun 27, 2012 1:54 am

The 700 mA supply might be marginal (just from what I've read), but I've been having similar problems.

I'll start another thread for my problems, assuming I don't first find a thread that matches completely, but here's some info on my problems:

5VDC phone charger power supply, rated at 1000 mA with a decent (based on my voltage drop measurements) USB to micro USB cable. At full load with X started, 4.82 VDC between TP1 and TP2. 3.32V and 1.81V out of the regulators. At the CLI, (without X started), the LAN connection (100 Mb/s to home router) works fine. Pinged google for 2 hours (thanks google) with no problem. When I do "startx", pretty much immediately "smc95xx" error messages show up in dmesg output. Evidence that major blocking is occurring when any network ops are attempted and maybe just in general.

Tried increasing vm.min_free_kbytes to no avail.

Running the debian6-19-04-2012 image on a 2 GB SanDisk SD card.

itimpi
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Re: Problem with network eth0: kevent 0

Wed Jun 27, 2012 6:47 am

Have you run rpi-update to ensure you have the latest firmware which includes SD card fixes?

twasiluk
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Joined: Fri Jun 29, 2012 6:21 pm

Re: Problem with network eth0: kevent 0

Fri Jun 29, 2012 8:59 pm

I had the same problem with network errors under xwindows. Everything worked fine under the text console.

I ran rpi-update and connected my keyboard and mouse directly to rpi while removing my usb hub. That seems to have solved the problem. I read this might be related to some electrical problems with usb hubs: http://www.raspberrypi.org/phpBB3/viewt ... =53&t=7581.

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