Red Hat Bugzilla – Bug 145078
dvd burner really slow response
Last modified: 2015-01-04 17:15:29 EST
Description of problem: In general dvd response is really slow. As an example: getting drive info from a DVD+-R takes 7 Minutes Version-Release number of selected component (if applicable): kernel 2.6.9-1.681_FC3smp How reproducible: always Steps to Reproduce: 1. insert pre-written dvd-r or dvd+r media 2. fire up k3b and ask for disk info 3. k3b goes away for 7 Minutes (yes 420 seconds) worked correctly with fc1 loaded Actual results: snall speed response Expected results: few second response Additional info: dvd drive is Hi-Val "DVD RW 4XMax" (iomagic DD0203) 4x dvd +/-R writer. No messages are logged in /var/log/messages stopping haldaemon has no effect on problem Tracing k3b shows during the long delay it is somewhat activily talking to the device brk(0x9528000) = 0x9528000 ioctl(19, CDROM_SEND_PACKET, 0xfefa0110) = 0 ioctl(19, CDROM_SEND_PACKET, 0xfefa02a0) = 0 ioctl(19, CDROM_SEND_PACKET, 0xfefa02a0) = 0 ...
can you try with the latest kernel & haldaemon updates and see if that improves things ?
2.6.10-1.737_FC3smp kernel shows same behavior. However, being impatient and not wanting to wait the *** 7 minutes for it to come back I just ejected the disk using 'eject cdrom'. Interesting enough in the process of doing the eject k3b read the disk info and displayed it. I am not sure if I completely understand this, but I assume it means some other process is interfering with k3b. However on checking this futher it's not consistant. Occasionally an eject will trigger something allowing k3b to get diskinfo not not always. One other thing, k3b can get disk info from a DVD+RW disk in about 10 seconds. lightyears faster than for DVD+R or DVD-R disks. Also stopping haldaemon has no effect on things.
An update has been released for Fedora Core 3 (kernel-2.6.12-1.1372_FC3) which may contain a fix for your problem. Please update to this new kernel, and report whether or not it fixes your problem. If you have updated to Fedora Core 4 since this bug was opened, and the problem still occurs with the latest updates for that release, please change the version field of this bug to 'fc4'. Thank you.
Unable to test on FC3. FC4 does not have this problem.