The easiest way is to mark bug "incomplete", "not my problem", "update and
broke your BIOS and don't write anymore".
I see that reporting bugs to Ubuntu is wasting time!
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Summary changed:
- 0951:1697 [Asus P5WD2-Premium] Low write speed to USB disks
+ 0951:1697 Low write speed to USB disks
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https://bugs.launchpad.net/bugs/1242085
Title:
0951:1697 Low write speed to USB disks
Status in “linux” package in Ubuntu:
Confirmed
Bug description:
Using a Kingston DT Ultimate G3 (32GB) the "Disks" tool shows write
speed about 7 MB/s !!! After start benchmark this tool shows write
speed about 17 MB/s but immediately goes below 10 MB/s. Same low speed
during copy e.g. 3GB file manually to USB 3.0 disk. This does not
occur on read, only write.
Similar low write speed problem is for disks:
- Seagate Expansion Portable Hard Drive 500GB (model inside ST500LT012-9WS142)
- Verbatim Store 'n' Go SuperSpeed USB 3.0 Portable Hard Drive 500GB (model
inside ST500LM0 12 HN-M500MB)
I report this bug from PC, but the same bug is on my laptop Asus X55U.
Even the write speed on my laptop is more important to me.
What I found about this bug (VERY IMPORTANT NOTE):
- In old realese 12.04 LTS disks works OK.
- In 13.04 disks works faster than it is now in 13.10.
- If disk is formatted as NTFS the write speed is the lowest.
- If disk is formatted as EXT4 the speed is x2 better.
- If disk is formatted as FAT32 is low too.
- No matter if disk is connected via USB 2.0 or USB 3.0. The low write speed
is always the same.
- This problem doesn't exists in Windows (so this is no hardware or BIOS
problem).
- This problem doesn't exists in OpenSUSE (so this is no hardware or BIOS
problem).
- No matter if there is UEFI. Laptop Asus X55U has UEFI but PC has not.
- Hardware - no matter (same is on laptop ASUS X55U, I report from my PC now)
- No matter if Ubuntu is 32 or 64 bit mode.
---
ApportVersion: 2.12.5-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: user-pc 1424 F.... pulseaudio
/dev/snd/controlC0: user-pc 1424 F.... pulseaudio
CurrentDmesg:
[ 20.325188] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[ 167.464491] systemd-hostnamed[2044]: Warning: nss-myhostname is not
installed. Changing the local hostname might make it unresolveable. Please
install nss-myhostname!
[ 1467.583396] systemd-hostnamed[2164]: Warning: nss-myhostname is not
installed. Changing the local hostname might make it unresolveable. Please
install nss-myhostname!
[ 5670.978467] systemd-hostnamed[2802]: Warning: nss-myhostname is not
installed. Changing the local hostname might make it unresolveable. Please
install nss-myhostname!
DistroRelease: Ubuntu 13.10
HibernationDevice: RESUME=UUID=4b9c34cd-9ce1-4ac3-ac15-3801b2fcc06b
InstallationDate: Installed on 2013-10-18 (1 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64
(20131016.1)
IwConfig:
eth0 no wireless extensions.
eth1 no wireless extensions.
lo no wireless extensions.
MachineType: System manufacturer System Product Name
MarkForUpload: True
Package: linux (not installed)
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-12-generic
root=UUID=2f9a3d14-fd4f-4d71-87d1-05e40c87052e ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
RelatedPackageVersions:
linux-restricted-modules-3.11.0-12-generic N/A
linux-backports-modules-3.11.0-12-generic N/A
linux-firmware 1.116
RfKill:
Tags: saucy
Uname: Linux 3.11.0-12-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.date: 09/23/2005
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0519
dmi.board.name: P5WD2-Premium
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr0519:bd09/23/2005:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5WD2-Premium:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
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