Public bug reported:
Binary package hint: linux-image-2.6.20-15-generic
First of all I use Ubuntu 7.04 on my ASUS A6Jc laptop.
When I boot generic kernel (2.6.20-15-generic) shipped with ubuntu I
get:
[ 4.280000] ata1: PATA max UDMA/133 cmd 0x000101f0 ctl 0x000103f6 bmdma
0x0001ffa0 irq 14
[ 4.280000] ata2: PATA max UDMA/133 cmd 0x00010170 ctl 0x00010376 bmdma
0x0001ffa8 irq 15
[ 4.280000] scsi0 : ata_piix
[ 4.664000] ata1.00: ata_hpa_resize 1: sectors = 156301488, hpa_sectors =
156301488
[ 4.664000] ata1.00: ATA-6: ST980829A, 3.04, max UDMA/100
[ 4.664000] ata1.00: 156301488 sectors, multi 16: LBA48
[ 4.664000] ata1.01: ATAPI, max UDMA/33
[ 4.672000] ata1.00: ata_hpa_resize 1: sectors = 156301488, hpa_sectors =
156301488
[ 4.672000] ata1.00: configured for UDMA/100
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[ 4.836000] ata1.01: configured for UDMA/33
[ 4.836000] scsi1 : ata_piix
[ 4.836000] ata2: port disabled. ignoring.
[ 4.836000] scsi 0:0:0:0: Direct-Access ATA ST980829A 3.04
PQ: 0 ANSI: 5
[ 4.836000] scsi 0:0:1:0: CD-ROM MATSHITA DVD-RAM UJ-841S 1.00
PQ: 0 ANSI: 5
[ 4.856000] SCSI device sda: 156301488 512-byte hdwr sectors (80026 MB)
[ 4.856000] sda: Write Protect is off
[ 4.856000] sda: Mode Sense: 00 3a 00 00
[ 4.856000] SCSI device sda: write cache: enabled, read cache: enabled,
doesn't support DPO or FUA
[ 4.856000] SCSI device sda: 156301488 512-byte hdwr sectors (80026 MB)
[ 4.856000] sda: Write Protect is off
[ 4.856000] sda: Mode Sense: 00 3a 00 00
[ 4.856000] SCSI device sda: write cache: enabled, read cache: enabled,
doesn't support DPO or FUA
[ 4.856000] sda: sda1 sda2
[ 4.892000] sd 0:0:0:0: Attached scsi disk sda
[ 4.900000] sd 0:0:0:0: Attached scsi generic sg0 type 0
[ 4.900000] sr 0:0:1:0: Attached scsi generic sg1 type 5
[ 4.904000] sr0: scsi3-mmc drive: 24x/24x writer dvd-ram cd/rw xa/form2 cdda
tray
[ 4.904000] Uniform CD-ROM driver Revision: 3.20
[ 4.904000] sr 0:0:1:0: Attached scsi CD-ROM sr0
After standby and then resume I get:
[ 155.604000] ata1.00: ata_hpa_resize 1: sectors = 156301488, hpa_sectors =
156301488
[ 155.604000] ata1.00: limited to UDMA/33 due to 40-wire cable
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
[ 155.612000] ata1.00: ata_hpa_resize 1: sectors = 156301488, hpa_sectors =
156301488
[ 155.612000] ata1.00: configured for UDMA/33
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[ 155.612000] ata1: EH pending after completion, repeating EH (cnt=4)
[ 155.612000] ata1: soft resetting port
...
[ 155.940000] ata1.00: ata_hpa_resize 1: sectors = 156301488, hpa_sectors =
156301488
[ 155.948000] ata1.00: ata_hpa_resize 1: sectors = 156301488, hpa_sectors =
156301488
[ 155.948000] ata1.00: configured for UDMA/33
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[ 156.112000] ata1.01: configured for UDMA/33
[ 156.112000] ata1: EH complete
[ 156.112000] SCSI device sda: 156301488 512-byte hdwr sectors (80026 MB)
[ 156.116000] sda: Write Protect is off
[ 156.116000] sda: Mode Sense: 00 3a 00 00
[ 156.116000] SCSI device sda: write cache: enabled, read cache: enabled,
doesn't support DPO or FUA
[ 156.120000] SCSI device sda: 156301488 512-byte hdwr sectors (80026 MB)
[ 156.120000] sda: Write Protect is off
[ 156.120000] sda: Mode Sense: 00 3a 00 00
[ 156.144000] SCSI device sda: write cache: enabled, read cache: enabled,
doesn't support DPO or FUA
Tests using hdparam before (1) and after (2) standby - resume confirm
that disk run in slower UDMA mode:
(1) # hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 2454 MB in 2.00 seconds = 1228.09 MB/sec
Timing buffered disk reads: 96 MB in 3.03 seconds = 31.73 MB/sec
(2) # hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 2428 MB in 2.00 seconds = 1214.84 MB/sec
Timing buffered disk reads: 58 MB in 3.04 seconds = 19.10 MB/sec
** Affects: linux-source-2.6.20 (Ubuntu)
Importance: Undecided
Status: Unconfirmed
--
UDMA/100 disk after suspend/resume runs in UDMA/33 mode
https://bugs.launchpad.net/bugs/110729
You received this bug notification because you are a member of Ubuntu
Bugs, which is the bug contact for Ubuntu.
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
