Bug 74267
| Summary: | can't put my dvd drive into DMA mode | ||
|---|---|---|---|
| Product: | [Retired] Red Hat Public Beta | Reporter: | Thomas M Steenholdt <tmus> |
| Component: | hdparm | Assignee: | Karsten Hopp <karsten> |
| Status: | CLOSED NOTABUG | QA Contact: | Jay Turner <jturner> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | null | CC: | srevivo |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2002-09-19 05:25:22 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
You need to activate DMA while loading the ide-cd module. This is from our Release-Notes: * DMA is disabled on CD-ROM drives in this release in a different but more reliable way than previously. If you are sure that your CD-ROM drive is capable of IDE DMA, place the following line in the /etc/modules.conf file: options ide-cd dma=1 |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.1) Gecko/20020826 Description of problem: hdparm -d1 /dev/hdc fails with: /dev/hdc: setting using_dma to 1 (on) HDIO_SET_DMA failed: Operation not permitted using_dma = 0 (off) on HITACHI DVD-ROM GD-S200(from /proc/ide/hdc/model) (ide-cdrom version 4.59) The drive DOES do DMA - I've used DMA mode with it before... Actually I think that RH7.3 did not have this problem. Also I have never had any problems with using it in DMA mode before Version-Release number of selected component (if applicable): How reproducible: Always Steps to Reproduce: 1. do hdparm -d1 /dev/hdc Actual Results: Cannot set the drive to use DMA Expected Results: Shoule be able to set the drive to use DMA Additional info: