Atheros AR8172 PCIe Fast Ethernet

mail at mail at
Thu Jan 7 07:18:35 UTC 2016


I'm trying to install FreeBSD 10.2 (generic kernel) on a Toshiba
Satellite Pro C50D-A-145. If I'm trying to establish a connection to
another host, i.e. via sftp, the following message more and more appears:

 	alc0: DMA write error! -- resetting

I cannot transfer any files with sftp, the password prompt is still

The output of dmesg looks like this:

     alc0: <Atheros AR8172 PCIe Fast Ethernet> port 0x2000-0x207f mem 0xf0800000-0xf083ffff at device 0.0 on pci2
     alc0: 11776 Tx FIFO, 12032 Rx FIFO
     alc0: Using 1 MSIX message(s)
     miibus0: <MII bus> on alc0
     atphy0: <Atheros F1 10/100/1000 PHY> PHY 0 on miibus0
     atphy0: none, 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT-FDX, 1000baseT-FDX-master, auto, auto-flow
alc0: Using defaults for TSO: 65518/35/2048

and then the correct Ethernet address.

The Toshiba is a dual boot machine, so I have Xubuntu (:-((( ) installed
in addition. With this OS the Atheros AR8172 PCIe Fast Ethernet works

I don't understand the problem: Is it a bug? What can I do?

Thanks in advance


Manfred Hermann
Bahnhofstr. 23
D-75210 Keltern
eMail: manfred.hermann at

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