Bug 414811

Summary:	gtkterm hangs when virtual serial device is disconnected
Product:	[Fedora] Fedora	Reporter:	Olof Tångrot <olof.tangrot>
Component:	gtkterm	Assignee:	Dan Horák <dan>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	low
Version:	8	CC:	dan, hdegoede
Target Milestone:	---
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	0.99.5-6.fc7	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2007-12-27 01:02:36 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 Olof Tångrot 2007-12-06 20:33:59 UTC

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.8.1.10) Gecko/20071128 Fedora/2.0.0.10-2.fc8 Firefox/2.0.0.10

Description of problem:
gtkterm floods console with "Control signals read: Input/output error" when virtual serial USB device is disconnected. Also gtkterm menus are locked and connection can not be terminated without less than killing gtktem.

Problem also existing on Fedora 7 and Fedora Core 6 (IA32 arch.)

SiLabs CP2102 USB to UART bridge is used as USB driver.

Don't think it's a device driver problem.
cat /dev/ttyUSB0 will simply return to the console if the USB device is disconnected.



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


How reproducible:
Always


Steps to Reproduce:
1. Connect USB device to the mainframe.
2. Start a xterm session to get a command promt.
3. Start gtkterm and select port /dev/ttyUSB0 (or whatever) and correct serial speed
4. Wait for some communication from the virtual terminal
5. Disconect USB device

Actual Results:
The xterm (stdout or stderr) is flooded with "Control signals read: Input/output error
"

gtkterm menus are locked.

Expected Results:
A graceful handling of the exception. Typically terminal program indicates disconnected and allows the user to make a new connection.

No flooding of stderr or stdout should occur.

Additional info:

Comment 1 Dan Horák 2007-12-09 09:19:58 UTC

Can you try a new rpm from
http://koji.fedoraproject.org/koji/taskinfo?taskID=284092 ?

Comment 2 Hans de Goede 2007-12-09 09:54:24 UTC

Thanks for picking this up Dan, I've been really busy working on something else
(keep an eye on planet.fedoraproject.org for an announcement tomorrow), so I
appreciate you picking up this (and other gtkterm bugs).

Comment 3 Dan Horák 2007-12-09 10:16:04 UTC

(In reply to comment #2)
> Thanks for picking this up Dan, I've been really busy working on something else
> (keep an eye on planet.fedoraproject.org for an announcement tomorrow), so I
> appreciate you picking up this (and other gtkterm bugs).
> 

No problem, Hans. As I and my colleagues are using gtkterm in work, I am fixing
the bugs for myself too :-) Now I only hope that the one-liner will fix this
issue as I have no serial device at home. But at least I see no problems when
pluging and unpluging just the USB<->serial converter cable.

Comment 4 Olof Tångrot 2007-12-10 08:09:18 UTC

The new package works on my x86_64 Fedora 8 machine as I originally (get ready 
for a small scope creep) intended. Though there are a small spot in the user 
interface relvealed now.

The MMI still indicates that /dev/ttsUSB0 is connected. Now, if I reconnect the 
USB-device the connection is not resumed. I have to enter the menu and reselect 
the same port before it does. This is confusing to the user. 

I belive it would be more user friendly if the disconnected state of the 
selected prot is indicated someway in the MMI. Also if the USB-device is 
reconnected it's a very nice feature to get the port automatically reconnected.

Olof

Comment 5 Dan Horák 2007-12-10 09:03:59 UTC

(In reply to comment #4)
> The new package works on my x86_64 Fedora 8 machine as I originally (get ready 
> for a small scope creep) intended. Though there are a small spot in the user 
> interface relvealed now.
> 

OK, I will officially build the package and then close this bug.


> The MMI still indicates that /dev/ttsUSB0 is connected. Now, if I reconnect the 
> USB-device the connection is not resumed. I have to enter the menu and reselect 
> the same port before it does. This is confusing to the user. 
> 
> I belive it would be more user friendly if the disconnected state of the 
> selected prot is indicated someway in the MMI. Also if the USB-device is 
> reconnected it's a very nice feature to get the port automatically reconnected.

This is more an upstream issue. Because upstream is not very responsive, I will
place this into my to-do list but without any fixed deadline.

Comment 6 Fedora Update System 2007-12-15 17:46:04 UTC

gtkterm-0.99.5-8.fc8 has been pushed to the Fedora 8 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update gtkterm'

Comment 7 Fedora Update System 2007-12-15 17:46:59 UTC

gtkterm-0.99.5-6.fc7 has been pushed to the Fedora 7 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update gtkterm'

Comment 8 Olof Tångrot 2007-12-20 21:15:34 UTC

Tested on Fedora 8 x86_64. It works, gtkterm MMI does not hang and the terminal
is not flooded.

Comment 9 Fedora Update System 2007-12-23 22:49:49 UTC

gtkterm-0.99.5-8.fc8 has been pushed to the Fedora 8 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update gtkterm'

Comment 10 Fedora Update System 2007-12-23 22:50:22 UTC

gtkterm-0.99.5-6.fc7 has been pushed to the Fedora 7 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update gtkterm'

Comment 11 Fedora Update System 2007-12-26 23:51:35 UTC

gtkterm-0.99.5-6.fc7 has been pushed to the Fedora 7 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update gtkterm'

Comment 12 Fedora Update System 2007-12-26 23:52:29 UTC

gtkterm-0.99.5-8.fc8 has been pushed to the Fedora 8 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update gtkterm'

Comment 13 Fedora Update System 2007-12-27 01:02:34 UTC

gtkterm-0.99.5-6.fc7 has been pushed to the Fedora 7 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 14 Fedora Update System 2007-12-27 01:03:03 UTC

gtkterm-0.99.5-8.fc8 has been pushed to the Fedora 8 stable repository.  If problems still persist, please make note of it in this bug report.