Bug 164267

Summary:	cat < /dev/ttyS0 gives no output
Product:	[Fedora] Fedora	Reporter:	Rueh Hänä <rueh>
Component:	kernel	Assignee:	Dave Jones <davej>
Status:	CLOSED WORKSFORME	QA Contact:	Brian Brock <bbrock>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	4	CC:	jaboutbo, pfrields, wtogami
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2005-08-26 21:44:48 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Rueh Hänä 2005-07-26 13:55:52 UTC

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Description of problem:
Hi there

None of the components listed, have to do with my problem, so far i think. 

I have two FC4 Servers with same configuration. They should communicate over a serial cable, that is plugged into /dev/ttyS0. 

If i do host A:

echo "sometext" > /dev/ttyS0

i should receive the text on Host B with

cat < /dev/ttyS0

But there is no text. 

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
HOST A
echo "sometext" > /dev/ttyS0

HOST B
cat < /dev/ttyS0

Actual Results:  Nothing

Expected Results:  The text should have reached the other Host (B)

Additional info:

Both Servers are HP ProLiant DL120's with 2.4Ghz CPU, 1GB Memory

Comment 1 Jack Aboutboul 2005-07-26 14:14:14 UTC

This is a kernel issue. Changed component for now, should resolve later today
after I confirm a few things.

Comment 2 Dave Jones 2005-08-26 21:44:48 UTC

This works fine here with the current kernel.

Check your cabling, and be sure you've actually plugged it into ttyS0.
It sounds like a hardware problem to me.