[Bug 198319] Re: Lenovo 3000 N200 DVD-rom missing

[Alexei Colin]

Same problem on Thinkpad T60 running 3.0.0-14-generic with a non-native
but compatible CD drive (took it from a T40, iirc): /dev/sr0 only
created with acpi=off boot parameter. There is no BIOS setting to
disable the drive (re comment #18). The drive model is in the log
(during acpi=off boot only):

kernel: [    1.043753] scsi 1:0:0:0: CD-ROM            HL-DT-ST DVD-ROM GDR8083N 0K03 PQ: 0 ANSI: 5
kernel: [    1.050088] sr0: scsi3-mmc drive: 10x/24x cd/rw xa/form2 cdda tray
kernel: [    1.050092] cdrom: Uniform CD-ROM driver Revision: 3.20
kernel: [    1.050215] sr 1:0:0:0: Attached scsi CD-ROM sr0

The drive used to be detected by Ubuntu fine at some point in the past
(I don't remember if this was before or after grub->grub2 update, but I
don't think I ever used lilo). Should this bug be marked as a
[regression]? Is there any debugging information that can be provided?
Should we file an upstream report if it has been positively determined
that this is induced by grub?

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https://bugs.launchpad.net/bugs/198319

Title:
  Lenovo 3000 N200 DVD-rom missing

Status in “grub2” package in Ubuntu:
  Confirmed

Bug description:
  After installing Ubuntu 7.10 on the laptop which had Vista already installed, there was no DVD/CD-rom in either Ubuntu or in Vista. Tried detecting new hardware in Vista but still could not find the DVD/CD-rom.
  The DVD/CD-rom could run a live disc of Linux but there was no DVD/CD-rom hardware in the Ubuntu or Vista partitions.
  Lenovo suggested going back to the factory defaults which has restored the DVD/CD-rom in Vista.
  How do I maintain the DVD/CD-rom for Ubuntu?

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