Sep  2 08:17:55 freddy vdr: [27707] ERROR: can't write to CI adapter on
device 0: Input/output error
Sep  2 08:17:55 freddy kernel: dvb_ca adapter 0: DVB CAM detected and
initialised successfully


This looks more like a driver bug to me.

Well maybe but unfortunately responds to my mails in linux-dvb /
linux-media mailinglist for that problem.

@Klaus:
If that problem happens, a manual reset of the cam under vdr's
menu->settings->ci brings the cam back.

What about trying to reset a cam automatically when it's Status is !=
msReady?

Like this:
diff --git a/device.c b/device.c
index 681049b..7904de2 100644
--- a/device.c
+++ b/device.c
@@ -239,6 +239,8 @@ cDevice *cDevice::GetDevice(const cChannel *Channel, int Priority, bool LiveView
   if (Channel->Ca() >= CA_ENCRYPTED_MIN) {
for (cCamSlot *CamSlot = CamSlots.First(); CamSlot; CamSlot = CamSlots.Next(CamSlot)) { SlotPriority[CamSlot->Index()] = MAXPRIORITY + 1; // assumes it can't be used
+         if (CamSlot->ModuleStatus() == msPresent)
+            CamSlot->Reset();
          if (CamSlot->ModuleStatus() == msReady) {
             if (CamSlot->ProvidesCa(Channel->Caids())) {
if (!ChannelCamRelations.CamChecked(Channel->GetChannelID(), CamSlot->SlotNumber())) {

Have you tested this?
Did it actually work?

Klaus

Will give it a try and report back....

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