LinuxQuestions.org
Visit the LQ Articles and Editorials section
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > Slackware
User Name
Password
Slackware This Forum is for the discussion of Slackware Linux.

Notices

Reply
 
Search this Thread
Old 02-18-2013, 03:18 PM   #1
Ranamon
LQ Newbie
 
Registered: Feb 2013
Location: Land of Hopenchange
Distribution: Slackware
Posts: 17

Rep: Reputation: Disabled
Slack 14 Problem


I have an external CD/DVD writer since this is a used HP machine that was an office workstation, and the management didn't include a reader/writer.

I had no problems with Slack 13.37 at all. Plug it in, and cdrecord found it every time. This time, "cdrecord -scanbus" returns this:

"No such file or directory. Can not open /dev/pg+
Can not open or use SCSI driver"

I have had no luck finding out what's wrong here. Tried "modprobe sg", but all cdrecord returns is the internal CD/DVD drive (the one that doesn't write).

I have had no trouble with an external HD that also uses the USB, but it won't recognize the writer.
 
Old 02-18-2013, 03:59 PM   #2
Woodsman
Senior Member
 
Registered: Oct 2005
Distribution: Slackware 14.1
Posts: 3,482

Rep: Reputation: 534Reputation: 534Reputation: 534Reputation: 534Reputation: 534Reputation: 534
I ran into this same problem yesterday. The solution is to modprobe the sg kernel module:

https://www.linuxquestions.org/quest...6/#post4877992

Edit the rc.modules script you are using and uncomment the appropriate line.
 
Old 02-18-2013, 04:19 PM   #3
Ranamon
LQ Newbie
 
Registered: Feb 2013
Location: Land of Hopenchange
Distribution: Slackware
Posts: 17

Original Poster
Rep: Reputation: Disabled
^
|

Unforch, it isn't the solution. I saw that post before opening a new thread, tried it, and cdrecord still can't find that external CD/DVD writer. All it finds after doing that modprobe is the internal CD/DVD reader, not the external one connected to the USB port.

I'm about to the point of reinstalling Slack 13.37 and saying t'hellwiddit
 
Old 02-18-2013, 04:44 PM   #4
volkerdi
Slackware Maintainer
 
Registered: Dec 2002
Location: Minnesota
Distribution: Slackware! :-)
Posts: 874

Rep: Reputation: 1812Reputation: 1812Reputation: 1812Reputation: 1812Reputation: 1812Reputation: 1812Reputation: 1812Reputation: 1812Reputation: 1812Reputation: 1812Reputation: 1812
I have no problem here using dev=/dev/sr0. Does that work?
 
Old 02-18-2013, 05:18 PM   #5
Ranamon
LQ Newbie
 
Registered: Feb 2013
Location: Land of Hopenchange
Distribution: Slackware
Posts: 17

Original Poster
Rep: Reputation: Disabled
Quote:
Originally Posted by volkerdi View Post
I have no problem here using dev=/dev/sr0. Does that work?
No, just seems to detect the internal CD/DVD drive.
 
Old 02-18-2013, 06:10 PM   #6
Woodsman
Senior Member
 
Registered: Oct 2005
Distribution: Slackware 14.1
Posts: 3,482

Rep: Reputation: 534Reputation: 534Reputation: 534Reputation: 534Reputation: 534Reputation: 534
Quote:
No, just seems to detect the internal CD/DVD drive.
What does lsscsi and lsusb show?
 
Old 02-18-2013, 06:54 PM   #7
Ranamon
LQ Newbie
 
Registered: Feb 2013
Location: Land of Hopenchange
Distribution: Slackware
Posts: 17

Original Poster
Rep: Reputation: Disabled
Quote:
Originally Posted by Woodsman View Post
What does lsscsi and lsusb show?
Before connecting it:

[0:0:0:0] disk ATA ST3808110AS 3.AH /dev/sda (the main HD)
[1:0:0:0] cd/dvd TSSTCorp DVD-ROM TS-H353A BA08 /dev/sr0 (Internal CD/DVD reader)

For whatever reason now cdrecord recognizes the external after connecting it right after running lsscsi. It wasn't doing that before.

Gremlins, I guess.
 
Old 02-18-2013, 07:43 PM   #8
Woodsman
Senior Member
 
Registered: Oct 2005
Distribution: Slackware 14.1
Posts: 3,482

Rep: Reputation: 534Reputation: 534Reputation: 534Reputation: 534Reputation: 534Reputation: 534
Quote:
Gremlins, I guess.
Does the problem reappear after a reboot/shutdown?
 
1 members found this post helpful.
Old 02-19-2013, 06:56 PM   #9
Ranamon
LQ Newbie
 
Registered: Feb 2013
Location: Land of Hopenchange
Distribution: Slackware
Posts: 17

Original Poster
Rep: Reputation: Disabled
Quote:
Originally Posted by Woodsman View Post
Does the problem reappear after a reboot/shutdown?
Yes, it certainly did. After shutting down and restarting the next day, the problem returned. This time, "modprobe sg" did nothing, and "lsscsi" or "lsusb" returned nothing about the device. When it did work with cdrecord, it was: dev=7,0,0. This time, there is nothing reported back about any activity on Bus 7, and that command fails with cdrecord.

No idea as to why it would work once, then fail again repeatedly.
 
Old 02-19-2013, 07:07 PM   #10
Woodsman
Senior Member
 
Registered: Oct 2005
Distribution: Slackware 14.1
Posts: 3,482

Rep: Reputation: 534Reputation: 534Reputation: 534Reputation: 534Reputation: 534Reputation: 534
This is a USB device? I would ignore cdrecord for the moment and focus on why lsusb is not displaying the device. First check the obvious things like the device has power, the cable is good, the USB connector is good, etc.
 
Old 02-19-2013, 10:44 PM   #11
Ranamon
LQ Newbie
 
Registered: Feb 2013
Location: Land of Hopenchange
Distribution: Slackware
Posts: 17

Original Poster
Rep: Reputation: Disabled
Quote:
Originally Posted by Woodsman View Post
This is a USB device? I would ignore cdrecord for the moment and focus on why lsusb is not displaying the device. First check the obvious things like the device has power, the cable is good, the USB connector is good, etc.
No need for that, this is a brand new device. There is something fuxxored about that new kernel. I give up. I dug out my Slack-12 install CDs, and blew Slack-14 away. Under this version, I plug the DVD writer in and it is recognized instantly, and KDE offers to start up its CD burning app. Will replace with Slack-13.37 when the iso download completes.

Maybe later when they fix that 3.0+ kernel.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
slack 12 problem 1berto Slackware 11 08-06-2007 05:25 PM
su problem in slack 10.1 lazyboy0001 Slackware 17 04-08-2005 09:53 PM
Problem with Slack 10.1 Lintux Slackware 17 02-11-2005 08:05 AM
Slack problem... TCasp77 Linux - Networking 1 02-27-2004 06:13 PM
Slack 8.1 problem DigitalKhaos Linux - Newbie 3 02-09-2003 01:58 AM


All times are GMT -5. The time now is 07:42 AM.

Main Menu
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration