diff options
authorNeels Hofmeyr <neels@hofmeyr.de>2018-02-28 15:51:19 +0100
committerNeels Hofmeyr <neels@hofmeyr.de>2018-02-28 15:51:19 +0100
commit3aa34223e1f4d75a51382f8a337c69b7e94e36a2 (patch)
parent7c52d76fb6b5050f5574b746294facb22c7e0268 (diff)
README: hint at pcscd service dependency
1 files changed, 22 insertions, 4 deletions
diff --git a/README.md b/README.md
index e532a87..9fa47b8 100644
--- a/README.md
+++ b/README.md
@@ -50,7 +50,7 @@ We assume that you have
* A smart card reader compatible with pcsc-lite
* Installed python program and pyscard library
+* You may also need to install and start the pcscd service
### smart card reader
@@ -58,8 +58,10 @@ Any reader supported by pcsc-lite will work. However, a reader
compatible with the USB CCID device class is much recommended.
Please verify that the hardware and driver setup is working, e.g. by
-using the 'pcsc_scan' tool included with pcsc-lite. You should get an
-output like:
+using the 'pcsc_scan' tool included with pcsc-lite. You may also need
+to install the 'pcscd' service.
+You should get an output like:
V 1.4.17 (c) 2001-2009, Ludovic Rousseau <ludovic.rousseau@free.fr>
Compiled with PC/SC lite version: 1.5.5
@@ -97,11 +99,27 @@ setup are likely wrong.
### pyscard
-pyscard can be installed from packages of major Linux distributions.
+pyscard can be installed from packages of major Linux distributions,
+for example 'apt-get install python-pyscard'.
If you want to build it from source, it is available from
+### pcscd
+If you encounter errors like
+ smartcard.pcsc.PCSCExceptions.EstablishContextException: 'Failure to establish context: Service not available.'
+ SCardEstablishContext: Service not available.
+you may have to install and run the pcscd service, for example:
+ apt-get install pcscd
+ systemctl start pcscd
## running osmo-sim-auth