Asterisk doesn't detect ring

I installed dahdi 2.10.0 and asterisk 11.12.0 from source. However, asterisk shows no ring when I call my pc with a Wildcard X101 FXO. Maximum debug level also shows no reaction when I call. The phone behind the X101 rings and works properly. I already changed slot without success.

How can I make asterisk answer the phone?

cat /etc/asterisk/dahdi-channels.conf

; Autogenerated by /usr/sbin/dahdi_genconf on Wed Aug 27 16:05:41 2014
; If you edit this file and execute /usr/sbin/dahdi_genconf again,
; your manual changes will be LOST.
; Dahdi Channels Configurations (chan_dahdi.conf)
;
; This is not intended to be a complete chan_dahdi.conf. Rather, it is intended
; to be #include-d by /etc/chan_dahdi.conf that will include the global settings
;

; Span 1: WCFXO/0 "Wildcard X101P Board 1" (MASTER) 
;;; line="1 WCFXO/0/0"
signalling=fxs_ks
callerid=asreceived
group=1
context=from-pstn
channel => 1
callerid=
group=
context=default

dahdi show channels

   Chan Extension       Context         Language   MOH Interpret        Blocked    State      Description                     
 pseudo                 default                    default                         In Service                                 
      1                 from-pstn                  default                         In Service    

dahdi show channel 1

Channel: 1
Description: 
File Descriptor: 9
Span: 1
Extension: 
Dialing: no
Context: from-pstn
Caller ID: 
Calling TON: 0
Caller ID name: 
Mailbox: none
Destroy: 0
InAlarm: 0
Signalling Type: FXS Kewlstart
Radio: 0
Owner: <None>
Real: <None>
Callwait: <None>
Threeway: <None>
Confno: -1
Propagated Conference: -1
Real in conference: 0
DSP: no
Busy Detection: no
TDD: no
Relax DTMF: no
Dialing/CallwaitCAS: 0/0
Default law: ulaw
Fax Handled: no
Pulse phone: no
Gains (RX/TX): 0.00/0.00
Dynamic Range Compression (RX/TX): 0.00/0.00
DND: no
Echo Cancellation:
	128 taps
	currently OFF
Wait for dialtone: 0ms
Actual Confinfo: Num/0, Mode/0x0000
Actual Confmute: No
Hookstate (FXS only): Onhook

lspci

00:00.0 Host bridge: Intel Corporation 82Q963/Q965 Memory Controller Hub (rev 02)
00:02.0 VGA compatible controller: Intel Corporation 82Q963/Q965 Integrated Graphics Controller (rev 02)
00:02.1 Display controller: Intel Corporation 82Q963/Q965 Integrated Graphics Controller (rev 02)
00:1a.0 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #4 (rev 02)
00:1a.1 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 (rev 02)
00:1a.7 USB controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 (rev 02)
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 (rev 02)
00:1c.5 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 6 (rev 02)
00:1d.0 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 (rev 02)
00:1d.1 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 02)
00:1d.2 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 (rev 02)
00:1d.7 USB controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev f2)
00:1f.0 ISA bridge: Intel Corporation 82801HB/HR (ICH8/R) LPC Interface Controller (rev 02)
00:1f.2 IDE interface: Intel Corporation 82801H (ICH8 Family) 4 port SATA Controller [IDE mode] (rev 02)
00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 02)
00:1f.5 IDE interface: Intel Corporation 82801HR/HO/HH (ICH8R/DO/DH) 2 port SATA Controller [IDE mode] (rev 02)
00:1f.6 Signal processing controller: Intel Corporation 82801H (ICH8 Family) Thermal Reporting Device
12:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5755 Gigabit Ethernet PCI Express (rev 02)
18:0b.0 Communication controller: Tiger Jet Network Inc. Tiger3XX Modem/ISDN interface

lsmod

Module                  Size  Used by
dahdi_echocan_mg2      12604  1 
wcfxo                  16877  1 
dahdi                 186953  4 dahdi_echocan_mg2,wcfxo
...

lsdahdi

### Span  1: WCFXO/0 "Wildcard X101P Board 1" (MASTER) 
  1 FXO        FXSKS       (In use) (EC: MG2 - INACTIVE) (battery)

cat /etc/dahdi/system.conf

# Autogenerated by /usr/sbin/dahdi_genconf on Wed Aug 27 16:05:41 2014
# If you edit this file and execute /usr/sbin/dahdi_genconf again,
# your manual changes will be LOST.
# Dahdi Configuration File
#
# This file is parsed by the Dahdi Configurator, dahdi_cfg
#
# Span 1: WCFXO/0 "Wildcard X101P Board 1" (MASTER) 
fxsks=1
echocanceller=mg2,1

# Global data

loadzone	= us
defaultzone	= us

cat /etc/dahdi/init.conf

#
# Shell settings for Dahdi initialization scripts.
# This replaces the old/per-platform files (/etc/sysconfig/zaptel,
# /etc/defaults/zaptel)
#

# The maximal timeout (seconds) to wait for udevd to finish generating 
# device nodes after the modules have loaded and before running dahdi_cfg. 
#DAHDI_DEV_TIMEOUT=40

# A list of modules to unload when stopping.
# All of their dependencies will be unloaded as well.
#DAHDI_UNLOAD_MODULES=""		# Disable module unloading
#DAHDI_UNLOAD_MODULES="dahdi echo"	# If you use OSLEC

# Override settings for xpp_fxloader
#XPP_FIRMWARE_DIR=/usr/share/dahdi
#XPP_HOTPLUG_DISABLED=yes
#XPP_HOTPLUG_DAHDI=yes

# Disable udev handling:
#DAHDI_UDEV_DISABLE_DEVICES=yes
#DAHDI_UDEV_DISABLE_SPANS=yes

grep -v “^;” chan_dahdi.conf

[trunkgroups]

[channels]
#include /etc/asterisk/dahdi-channels.conf

usecallerid=yes
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
canpark=yes


cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=yes

group=1
callgroup=1
pickupgroup=1

The card is ok since it works in the old system.

Any hints?