Public bug reported:
Binary package hint: linux-image-2.6.32-25-generic-pae
Fresh install of Ubuntu Server 10.04 with apt-get update && apt-get upgrade
Description: Ubuntu 10.04.1 LTS
Release: 10.04
Hardware: Default DELL PowerEdge 1600SC
Problem:
hdparm -tT /dev/sdc:
Timing cached reads: 522 MB in 2.00 seconds = 260.72 MB/sec
Timing buffered disk reads: 8 MB in 3.09 seconds = 2.59 MB/sec
i tried several disks.
dmesg:
u...@srv01:~$ dmesg | grep -i ata2
[ 0.934549] ata2: PATA max UDMA/100 cmd 0x170 ctl 0x376 bmdma 0x8b8 irq 15
[ 1.376567] ata2.00: ATA-6: ST3120026A, 3.16, max UDMA/100
[ 1.376645] ata2.00: 234375000 sectors, multi 8: LBA48
[ 1.376745] ata2.00: simplex DMA is claimed by other device, disabling DMA
[ 1.392560] ata2.00: configured for PIO4
It seems, that only the first port is dma enabeld, the second one is
not..
Affected package: linux-image-2.6.32-25-generic-pae
linux-image-2.6.32-25-generic-pae:
Installiert: 2.6.32-25.45
Kandidat: 2.6.32-25.45
Versions-Tabelle:
*** 2.6.32-25.45 0
500 http://at.archive.ubuntu.com/ubuntu/ lucid-updates/main Packages
500 http://security.ubuntu.com/ubuntu/ lucid-security/main Packages
100 /var/lib/dpkg/status
expected: DMA on both IDE ports
current: only the primary port has dma
Hardware Details.
u...@srv01:~$ sudo hwinfo --short
cpu:
Intel(R) Xeon(TM) CPU 2.40GHz, 2392 MHz
Intel(R) Xeon(TM) CPU 2.40GHz, 2392 MHz
keyboard:
/dev/input/event2 HP Basic USB Keyboard
mouse:
/dev/input/mice Macintosh mouse button emulation
monitor:
Generic Monitor
graphics card:
ATI Mach64 GR
storage:
Floppy disk controller
Broadcom CSB5 IDE Controller
Silicon Image SiI 0680 ATA/133 Controller
LSI Logic / Symbios Logic 53c1030 PCI-X Fusion-MPT Dual
Ultra320 SCSI
network:
eth2 Intel 82540EM Gigabit Ethernet Controller
network interface:
lo Loopback network interface
eth2 Ethernet network interface
vmnet1 Ethernet network interface
vmnet8 Ethernet network interface
disk:
/dev/sda Maxtor 6L160P0
/dev/sdb Maxtor 6L160P0
/dev/sdc ST3120026A
/dev/sdd WDC WD3200JB-00K
/dev/sde WDC WD3200JB-00K
partition:
/dev/sda1 Partition
/dev/sda2 Partition
/dev/sda5 Partition
/dev/sda6 Partition
/dev/sdb1 Partition
/dev/sdb2 Partition
/dev/sdb5 Partition
/dev/sdb6 Partition
/dev/sdc1 Partition
/dev/sdd1 Partition
/dev/sde1 Partition
usb controller:
Broadcom OSB4/CSB5 OHCI USB Controller
NEC Hama USB 2.0 CardBus
NEC Hama USB 2.0 CardBus
NEC USB 2.0
bios:
BIOS
bridge:
Broadcom GCNB-LE Host Bridge
Broadcom GCNB-LE Host Bridge
Broadcom CSB5 South Bridge
Broadcom CSB5 LPC bridge
Broadcom CIOB-X2 PCI-X I/O Bridge
Broadcom CIOB-X2 PCI-X I/O Bridge
hub:
Linux 2.6.32-25-generic-pae ehci_hcd EHCI Host Controller
Linux 2.6.32-25-generic-pae ohci_hcd OHCI Host Controller
Linux 2.6.32-25-generic-pae ohci_hcd OHCI Host Controller
Linux 2.6.32-25-generic-pae ohci_hcd OHCI Host Controller
memory:
Main Memory
unknown:
FPU
DMA controller
PIC
Timer
Keyboard controller
/dev/lp0 Parallel controller
PS/2 Controller
Unclassified device
Unclassified device
Unclassified device
Unclassified device
Unclassified device
Unclassified device
Unclassified device
Unclassified device
Unclassified device
Unclassified device
Unclassified device
Unclassified device
/dev/ttyS0 16550A
/dev/st0 HP Ultrium 1-SCSI
i tried to diasble acpi with no success.
i hope, this is enough of information.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
--
module pata_serverworks: [ 1.376745] ata2.00: simplex DMA is claimed by
other device, disabling DMA, HDD is in PIO Mode
https://bugs.launchpad.net/bugs/672426
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