paolo gozzini, if you have a bug in Ubuntu, the Ubuntu Kernel team, Ubuntu Bug Control team, and Ubuntu Bug Squad would like you to please file a new report by executing the following in a terminal while booted into a Ubuntu repository kernel (not a mainline one) via: ubuntu-bug linux
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Thank you for your understanding. ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete ** Summary changed: - Copying files to USB flash drive is extremely slow + [Acer Ferrari 4000] Copying files to USB flash drive is extremely slow ** Tags added: latest-bios-3a27 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/541937 Title: [Acer Ferrari 4000] Copying files to USB flash drive is extremely slow Status in “linux” package in Ubuntu: Incomplete Status in “linux” package in Fedora: Unknown Status in openSUSE: Unknown Bug description: Copying files from an internal hard drive to an external USB pandrive is slowing down during this process in Lucid Lynx alpha3 with all the updates until now. Also note that the copying speed is well below the standard rate for high-speed USB devices even in the initial state. As a first look this phenomenon is independent of the filesystem of the USB stick although some effect may be observed. I formatted it either ext3, ntfs or vfat the result was the same. Copying starts around 20-30 MB/sec transfer speed and around 300 MB copied materials the process is slowing down below 15 MB/sec and between 400-500 MB transfered data it is below 10 MB/sec. Reaching the 1GB amount of copied data the speed is only around 2 MB/sec. In case of using vfat file system the transfer speed may go below the 1MB/sec transfer speed at this stage. The number of the files I transfered from my hard drive to a 16GB USB pandrive were 350 with a total size of 5.4GB. In an other experiment (with ntfs usb partition) transferring only one large file having a size of 2.7GB took more than a hour (0.7 MB/sec in average)! ProblemType: Bug AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21. Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: zoli 1325 F.... pulseaudio /dev/snd/pcmC0D0p: zoli 1325 F...m pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Card hw:0 'IXP'/'ATI IXP rev 2 with ALC250 at 0xc0003400, irq 17' Mixer name : 'Realtek ALC250 rev 2' Components : 'AC97a:414c4752' Controls : 33 Simple ctrls : 21 Card1.Amixer.info: Card hw:1 'Modem'/'ATI IXP Modem rev 2 at 0xc0003800, irq 17' Mixer name : 'Silicon Laboratory Si3036,8 rev 15' Components : 'AC97m:53494c2f' Controls : 3 Simple ctrls : 3 Card1.Codecs.codec97.0.mc97.1.1: 1-1/0: Silicon Laboratory Si3036,8 rev 15 Extended modem ID: codec=1 LIN1 Modem status : GPIO MREF ADC1 DAC1 PRE(ADC2) PRF(DAC2) PRG(HADC) PRH(HDAC) Line1 rate : 13714Hz Date: Fri Mar 19 13:46:04 2010 DistroRelease: Ubuntu 10.04 HibernationDevice: RESUME=UUID=3ce2aaac-b25e-4863-91a2-0a57ade09901 InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha amd64 (20100224.1) Lsusb: Bus 003 Device 003: ID 15d9:0a33 Dexon Mouse Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 018: ID 3538:0059 Power Quotient International Co., Ltd Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Acer, inc. Ferrari 4000 Package: linux-image-2.6.32-16-generic 2.6.32-16.25 PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.32-16-generic root=UUID=4ceac70f-55c9-4a91-baae-aee960ec8114 ro quiet splash ProcEnviron: PATH=(custom, user) LANG=en_US.utf8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.32-16.25-generic Regression: No RelatedPackageVersions: linux-firmware 1.32 Reproducible: Yes RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux TestedUpstream: No Uname: Linux 2.6.32-16-generic x86_64 dmi.bios.date: 03/20/06 dmi.bios.vendor: Acer dmi.bios.version: 3A27 dmi.board.name: Ferrari IV dmi.board.vendor: Acer, Inc. dmi.board.version: Not Applicable dmi.chassis.type: 1 dmi.chassis.vendor: , Inc. dmi.chassis.version: N/A dmi.modalias: dmi:bvnAcer:bvr3A27:bd03/20/06:svnAcer,inc.:pnFerrari4000:pvrNotApplicable:rvnAcer,Inc.:rnFerrariIV:rvrNotApplicable:cvn,Inc.:ct1:cvrN/A: dmi.product.name: Ferrari 4000 dmi.product.version: Not Applicable dmi.sys.vendor: Acer, inc. 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