Bug 48465
Summary: | IDE CD-ROM has DMA problems and needs to be blacklisted | ||
---|---|---|---|
Product: | [Retired] Red Hat Linux | Reporter: | Marco Tului <nemoero> |
Component: | kernel | Assignee: | Arjan van de Ven <arjanv> |
Status: | CLOSED CURRENTRELEASE | QA Contact: | Brock Organ <borgan> |
Severity: | high | Docs Contact: | |
Priority: | high | ||
Version: | 7.1 | ||
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: | 2001-07-18 19:53:27 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: |
Description
Marco Tului
2001-07-10 18:47:12 UTC
try booting with "linux ide=nodma". If this fixes the problem run the following after you install your system and add the info here. for I in /proc/ide/hd*; do echo $I; cat $I/model; done I've tried to do what you've told me... and... it runs! After I've booted from the cd, I wrote "linux ide=nodma", and the installer succesfully started! Thank you very much! :-) Now I'm using my new RedHat 7.1 (it's very nice!), and I'm connected to internet via adsl (with the RedHat 6.2 I wasn't able to activate my adsl internet connection -but maybe it wasn't for the RedHat 6.2, but for me... :-) -) But... excuse me, I'm a newbie... what means what you've told me later? I have to digit, at a shell promt, exactly this command: "for I in /proc/ide/hd*; do echo $I; cat $I/model; done" ? That's correct, please type in that command and send us the output. I've typed what you've writed, and this is the output: /proc/ide/hda Maxtor 82100A4 /proc/ide/hdb ST38410A /proc/ide/hdc LG CD-RW CED-8042B /proc/ide/hdd CRD-8400B But... before, some times ago, I've installed a RedHat 6.1 (and also, later, a 6.2 one) on the same computer I'm using now, and it runned without any problem! Why do you want blacklist my CDROM? :-) RHL71 is the first version that enabled (Ultra)DMA on devices that in the "device query" report that they support this. This increases speed a lot, esp for harddrives and newer cdrom drives, however there's a small number of (usually older) devices that claim to support DMA, but once the kernel starts using it, totally get confused because they don't actually support it. There is a list of such devices, and if a device is on that list (yours will be added), the kernel will not try DMA on it. That's the "DMA Blacklist" :) Thank you for have helped me, and for this information you gave me. And... I hope I was useful to you. :-) Goodbye. :-) p.s.: I'm sorry for my bad English... I'll study better soon. :-) Ok one last question: which of the drives was the cd in when this failed? The CDRW or the normal cdrom drive ? Oh, I'm sorry if I missed to tell you before: it was the CDRW, from which it's possible to boot the computer. Thank you, and goodbye. :-) |