Red Hat Bugzilla – Bug 503274
libata doesn't detects pata with ICH7
Last modified: 2010-06-28 08:45:39 EDT
Description of problem:
I'm trying to install Fedora 11 preview on Intel SS4200-EHW. The motherboard has a Intel ICH7 chipset with 4 sata ports and one pata. The problem is that ata_piix doesn't detect the pata disks, (Two Kingston 4Gb CompactFlash, tried a normal pata disk as well). Bios detects the disk just fine and the EDD module reports 6 disks which is correct.
IDE mode in bios, ata_piix detects the sata disks
sh-4.0# lspci -nn -s 00:1f.2
00:1f.2 IDE interface : Intel Corporation 82801GB/GR/GH (ICH7 Family) SATA IDE Controller [8086:27c0] (rev 01)
AHCI mode in bios, ahci driver detects the sata disks
sh-4.0# lspci -nn -s 00:1f.2
00:1f.2 SATA controller : Intel Corporation 82801GR/GH (ICH7 Family) SATA AHCI Controller [8086:27c1] (rev 01)
If I boot a Gentoo minimal installation (20090526) CD that has the old IDE layer, the kernel detects the pata disks.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Boot Fedora 11 Preview on Intel SS4200-EHW
2. Installer doesn't show any pata disks.
No pata disks detect.
Pata disks detect
Some more information:
By using the old IDE driver ide-generic I've been able to get my pata devices detected. But I only get 1-2MB/s, from what I've read it's because the driver can't enable DMA.
If I change to "compatible" in BIOS I only get four drives instead of six. But the four detected drives (two sata, two pata) works. I get ~43MB/s from pata and over 100MB/s from sata.
I've tried with Fedora-11-RC4-x86_64-DVD and there aren't any changes.
Same with Fedora-11-x86_64-DVD.
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