I installed CentOS 6 on a Dell Optiplex 790 with a StarTech.com dual serial
port card, and the serial ports aren't being recognized. According to
dmesg,
only the built-in serial port is being recognized:
# dmesg | fgrep ttyS
serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
00:08: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
And lspci -v doesn't show that any drivers are loaded for it:
# lspci -v
[snip]
03:00.0 Serial controller: NetMos Technology PCIe 9922 Multi-I/O Controller
(prog-if 02 [16550])
Subsystem: Device a000:1000
Flags: fast devsel, IRQ 16
I/O ports at 2010 [size=8]
Memory at e1a30000 (32-bit, non-prefetchable) [size=4K]
Memory at e1a20000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [50] MSI: Enable- Count=1/8 Maskable- 64bit+
Capabilities: [78] Power Management version 3
Capabilities: [80] Express Legacy Endpoint, MSI 00
Capabilities: [100] Virtual Channel <?>
Capabilities: [800] Advanced Error Reporting
03:00.1 Serial controller: NetMos Technology PCIe 9922 Multi-I/O Controller
(prog-if 02 [16550])
Subsystem: Device a000:1000
Flags: fast devsel, IRQ 17
I/O ports at 2000 [size=8]
Memory at e1a10000 (32-bit, non-prefetchable) [size=4K]
Memory at e1a00000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [50] MSI: Enable- Count=1/8 Maskable- 64bit+
Capabilities: [78] Power Management version 3
Capabilities: [80] Express Legacy Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
What do I need to do to get these serial ports recognized? On some other
CentOS 6 systems with StarTech.com serial cards they were automatically
recognized (different hardware and not PCIe based).
Thanks,
Alfred
On 01/05/12 2:10 PM, Alfred von Campe wrote:> What do I need to do to get these serial ports recognized?random googling from that serial controller name NetMos Technology PCIe 9922 Multi-I/O Controller seems to indicate you'll need to compile the kernel driver for it, its not supported until kernel 3.1 the driver appears to be here, http://www.asix.com.tw/products.php?op=pItemdetail&PItemID=120;74;110&PLine=74 <http://www.asix.com.tw/products.php?op=pItemdetail&PItemID=120;74;110&PLine=74> when you've compiled a custom kernel driver, you'll need to remember to recompile it for each kernel update, unless you go through some serious dancing with (I forget the eTLA for the magic that causes the kernel installer to autocompile site-specific stuff)> On some other > CentOS 6 systems with StarTech.com serial cards they were automatically > recognized (different hardware and not PCIe based).those cards undoubtedly used a different chip that's supported by the el6 kernel. -- john r pierce N 37, W 122 santa cruz ca mid-left coast
On 01/05/2012 11:10 PM, Alfred von Campe wrote:> I installed CentOS 6 on a Dell Optiplex 790 with a StarTech.com dual serial > port card, and the serial ports aren't being recognized. According to dmesg, > only the built-in serial port is being recognized: > > # dmesg | fgrep ttyS > serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A > 00:08: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A > > And lspci -v doesn't show that any drivers are loaded for it: > > # lspci -v > [snip] > 03:00.0 Serial controller: NetMos Technology PCIe 9922 Multi-I/O Controller (prog-if 02 [16550]) > Subsystem: Device a000:1000 > Flags: fast devsel, IRQ 16 > I/O ports at 2010 [size=8] > Memory at e1a30000 (32-bit, non-prefetchable) [size=4K] > Memory at e1a20000 (32-bit, non-prefetchable) [size=4K] > Capabilities: [50] MSI: Enable- Count=1/8 Maskable- 64bit+ > Capabilities: [78] Power Management version 3 > Capabilities: [80] Express Legacy Endpoint, MSI 00 > Capabilities: [100] Virtual Channel<?> > Capabilities: [800] Advanced Error Reporting > > 03:00.1 Serial controller: NetMos Technology PCIe 9922 Multi-I/O Controller (prog-if 02 [16550]) > Subsystem: Device a000:1000 > Flags: fast devsel, IRQ 17 > I/O ports at 2000 [size=8] > Memory at e1a10000 (32-bit, non-prefetchable) [size=4K] > Memory at e1a00000 (32-bit, non-prefetchable) [size=4K] > Capabilities: [50] MSI: Enable- Count=1/8 Maskable- 64bit+ > Capabilities: [78] Power Management version 3 > Capabilities: [80] Express Legacy Endpoint, MSI 00 > Capabilities: [100] Advanced Error Reporting > > What do I need to do to get these serial ports recognized? On some other > CentOS 6 systems with StarTech.com serial cards they were automatically > recognized (different hardware and not PCIe based). >Check this thread: https://www.centos.org/modules/newbb/viewtopic.php?topic_id=34250 -- Ljubomir Ljubojevic (Love is in the Air) PL Computers Serbia, Europe Google is the Mother, Google is the Father, and traceroute is your trusty Spiderman... StarOS, Mikrotik and CentOS/RHEL/Linux consultant