Il 17/05/2013 14:11, Pavel Hrdina ha scritto: > On 17.5.2013 14:02, Paolo Bonzini wrote: >> Il 17/05/2013 13:57, Pavel Hrdina ha scritto: >>>> >>>> What happens when you suspend the QEMU machine to RAM? I believe the >>>> tray should remain open or, if closed, should remain locked. Can you >>>> try the same test on bare-metal (hint: boot to emergency mode to bypass >>>> anything that udev can do with locking the tray, then use sg_prevent to >>>> toggle the state). >>> >>> I've booted to init 1, then ejected the CD-ROM tray and run the >>> pm-suspend. The computer has suspended successfully. And again >>> immediately after the computer is turned on before the screen is turned >>> on the CD-ROM tray is closed. >> >> Ok, these are good signs. :) >> >>> I don't have SCSI CD-ROM device to use the sg_prevent. >> >> All CD-ROMs ultimately speak SCSI (via ATAPI). You don't have /dev/sr0? >> >> Paolo >> > > Yes I have. If I run "sg_prevent /dev/sr0" the CD-ROM tray could be > still opened. Even with "sg_prevent -p 3 /dev/sr0".
Try "init=/bin/sh". Runlevel 1 might not be enough. Also, you can try "echo 0 > /sys/block/sr0/event_poll_msecs" Paolo
