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My problem is the following, since an upgrade to Kernel 3.7, my cdrom/DVD drive has dissapeared. There is no trace of /dev/sr0 /dev/cdrom0 and others. The drive does not show up in dmesg.

I see many errors like prereset failed erro = -19 and AE0x300B.

I tried several things, like adding modprobe.blacklist=pata_acpi to grub : GRUB_CMDLINE_LINUX="modprobe.blacklist=pata_acpi" I also tried upgrading to (I believe not supported) 3.7.1-030701-generic and a downgrade to 3.5.4 (here my dvd shows up, but the network is not working). As everything was working in 3.5, I would like to install 3.5.0.21-generic, but I can not find instructions / location how to do this.

Any suggestions ? (both are appreciated : going forward to solve my dvd drive problem or downgrade the kernel).

user115997
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1 Answers1

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Did you uninstall the 3.5.0.21 kernel? If you did not, uninstall the 3.7 and 3.5.4 kernels and you're done. To be sure you do have a working kernel in a terminal type dpkg --list | grep linux-image.

If you did uninstall the 3.5 kernel, you can:

  1. Disable the ppa which installed the 3.7 kernel by opening Software Sources. This has the consequence that the Nvidia packages won't get updated from the PPA.
  2. In a terminal type: sudo apt-get update followed by sudo apt-get install linux-image. Kernel 3.5 should be installed.
  3. Reboot with the newly installed kernel.
  4. Uninstall the 3.7 and 3.5.4 kernels and reboot.
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