New: Pressing the DVD eject button renders the DVD-ROM unusable
https://bugzilla.kernel.org/show_bug.cgi?id=43211
Summary: Pressing the DVD eject button renders the DVD-ROM
unusable
Product: IO/Storage
Version: 2.5
Kernel Version: 3.2.0-24-generic
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: IDE
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: NoCreated an attachment (id=73209)
--> (https://bugzilla.kernel.org/attachment.cgi?id=73209)
sudo lspci -vvnn
I'm using Ubuntu 12.04 with a Acer 4810TG laptop. This laptop has a DVD eject hardware button which renders the DVD-ROM device unusable when it's pressed.
The "eject cdrom" command works if the button hasn't been pressed. But after it's been pressed it does not work anymore:
$ eject cdrom eject: tried to use `/dev/scd0' as device name but it is no block device eject: unable to find or open device for: `cdrom'
The system has to be restarted to make the DVD-ROM work again.
Please see the attached dmesg-before.txt and dmesg-after.txt to see what's happening when that button is pressed.
Also please take a look at the original bug report on Launchpad:
https://bugs.launchpad.net/ubuntu/+source/eject/+bug/412527
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/811464
WORKAROUNDS:
WORKAROUND #1: (should always work)
Instead of pressing the hardware button enter this command in the command line:
eject cdrom
WORKAROUND #2: (works for some people including me) In the BIOS set SATA mode from AHCI to IDE.
WORKAROUND #3: (works for some people but not for me) Use the noacpi kernel parameter.
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[Bug 43211] Pressing the DVD eject button renders the DVD-ROM unusable
https://bugzilla.kernel.org/show_bug.cgi?id=43211
--- Comment #1 from Adam Niedling <[email protected]> 2012-05-06 13:37:04 --- Created an attachment (id=73210)
--> (https://bugzilla.kernel.org/attachment.cgi?id=73210)
dmesg before the eject button is pressed
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[Bug 43211] Pressing the DVD eject button renders the DVD-ROM unusable
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=43211
--- Comment #2 from Adam Niedling <[email protected]> 2012-05-06 13:37:31 --- Created an attachment (id=73211)
--> (https://bugzilla.kernel.org/attachment.cgi?id=73211)
dmesg after the eject button is pressed
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[Bug 43211] Pressing the DVD eject button renders the DVD-ROM unusable
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=43211
Alan <[email protected]> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |[email protected] Component|IDE |Config-Hotplug AssignedTo|[email protected] |acpi_config-hotplug@kernel- | |bugs.osdl.org Product|IO/Storage |ACPI
--- Comment #3 from Alan <[email protected]> 2012-05-12 00:19:17 --- The eject button appears to be set via ACPI to physically disconnect and power off the device. That's not usual behaviour and would explain this.
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