USB Optical Drive

General system Kernel, boot, graphics & hardware
1

Hi,

I’ve been struggling with a USB optical drive. I mind the time when it used to work out of the box :slight_smile: …

This is my configuration now:

> groups
... optical ...

/etc/udev/rules.d> cat 90-optical.rules
KERNEL=="sr[0-9]*", GROUP="optical", MODE="0660"

/etc/modules-load.d> cat sg.conf
sg

Actually, it even works:

> sudo mount /dev/sr0 /mnt
mount: /mnt: WARNING: source write-protected, mounted read-only.

Unfortunately, it works only on my Manjaro box. On an EndeavourOS laptop exactly the same configuration (with the same USB drive, of course) won’t work:

> sudo mount /dev/sr0 /mnt
mount: /mnt: fsconfig system call failed: /dev/sr0: Can't open blockdev.
       dmesg(1) may have more information after failed mount system call.

What could be the lethal difference? Also I’m not sure that all of the configuration listed above is actually necessary.

2

Manjaro holds back packages and doesn’t follow the Arch release schedule. EndeavourOS follows the Arch release schedule because we use the Arch repo’s.

3

I know. But this is but a feeble excuse for my trouble. After all, I picked up most of the info on Arch Wiki…

4

maybe someone who has an optical drive can chime in. I have no idea how Manjaro does their library’s. I just know they will hold back packages so that could mean if something that has been making it work recently updated and “broke it” because manjaro is still on the older library’s. It may be fixed before Manjaro updates again.

5

@Tyrn
I have a usb optical drive so I could plug it in and see if it works on mine.

6

Mine mounts and works without an issue. I don’t have any special configuration or udev rules though.

1 Like
7

Thanks! I also suspect that the rules are unnecessary. Still, I’ve no idea what else to try.

8

You need to look at dmesg when plugging it in and also when it isn’t plugged in. Also check lsusb to see what it shows.

9

On my EndeavourOS laptop I replugged the optical drive from USB 3 to USB 2. Now it works :slight_smile:

Still, I’d be grateful for a review of my present configuration, and for an advice whether I should keep it or not.

1 Like
10

I don’t know enough about Arch to be sure in your case, but my USB optical drive just plugs in and works with no special configuration needed.

11

If it works it should be fine. Use it in the USB 2 port where it works.

12

Well, all I can say is I have EndeavouOS installed on my main PC, my miniPC, and my laptop. My usb optical drive works fine on all three, plug and play, no issues.

1 Like
13

It’s obviously a USB issue since it does work on USB 2 port. :wink:

14

Can also attest my usb optical (“pop-up mobile external dvd-rw”) plugs and plays with no incident.
It works in 2.0 and 3.0 and I think it has the blue 3.0 end (in the box now), used it yesterday.

busted port (unlikely)?
drivers? I wonder if external stuff needs fresh firmware? (have no idea)
3.0 issue?
maybe you need to add yourself to the right wheel? I haven’t done this in so long.

identical problem [solved] here: https://bbs.archlinux.org/viewtopic.php?id=302863

15

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