Public bug reported: I'm using Natty alpha 2 with the latest updates, running on a Lenovo T400s. When using a Lexar ExpressCard CompactFlash (CF) reader in the ExpressCard slot, the speed of this high speed device is very slow because the wrong settings are being used by the kernel.
This is the product: http://www.lexar.com/products/lexar-professional- expresscard-compactflash-cf-reader?category=213 Some relevant dmesg output: [ 1.308314] udev[74]: starting version 165 [ 1.355564] pata_jmicron 0000:05:00.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19 [ 1.355610] pata_jmicron 0000:05:00.0: setting latency timer to 64 [ 1.362895] scsi0 : pata_jmicron [ 1.366095] scsi1 : pata_jmicron [ 1.366145] ata1: PATA max UDMA/100 cmd 0x4020 ctl 0x4014 bmdma 0x4000 irq 19 [ 1.366148] ata2: PATA max UDMA/100 cmd 0x4018 ctl 0x4010 bmdma 0x4008 irq 19 [ 1.382061] e1000e: Intel(R) PRO/1000 Network Driver - 1.2.20-k2 [ 1.382063] e1000e: Copyright(c) 1999 - 2011 Intel Corporation. [ 1.382095] e1000e 0000:00:19.0: PCI INT A -> GSI 20 (level, low) -> IRQ 20 [ 1.382106] e1000e 0000:00:19.0: setting latency timer to 64 [ 1.382248] e1000e 0000:00:19.0: irq 43 for MSI/MSI-X [ 1.560701] ata1.00: CFA: TRANSCEND, 20091215, max UDMA/133 [ 1.560704] ata1.00: 125059072 sectors, multi 0: LBA [ 1.560707] ata1.00: limited to UDMA/33 due to 40-wire cable [ 1.580098] usb 1-6: new high speed USB device using ehci_hcd and address 3 [ 1.600683] ata1.00: configured for UDMA/33 [ 1.600837] scsi 0:0:0:0: Direct-Access ATA TRANSCEND 2009 PQ: 0 ANSI: 5 [ 1.600983] sd 0:0:0:0: Attached scsi generic sg0 type 0 [ 1.601000] sd 0:0:0:0: [sda] 125059072 512-byte logical blocks: (64.0 GB/59.6 GiB) [ 1.601047] sd 0:0:0:0: [sda] Write Protect is off [ 1.601049] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00 [ 1.601076] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA [ 1.602198] sda: sda1 [ 1.602554] sd 0:0:0:0: [sda] Attached SCSI disk "limited to UDMA/33 due to 40-wire cable" is obviously a key point here. Relevant output from sudo lspci -vv: 05:00.0 IDE interface: JMicron Technology Corp. JMB368 IDE controller (prog-if 85 [Master SecO PriO]) Subsystem: JMicron Technology Corp. JMB368 IDE controller Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 19 Region 0: I/O ports at 4020 [size=8] Region 1: I/O ports at 4014 [size=4] Region 2: I/O ports at 4018 [size=8] Region 3: I/O ports at 4010 [size=4] Region 4: I/O ports at 4000 [size=16] [virtual] Expansion ROM at f2900000 [disabled] [size=64K] Capabilities: [68] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- Capabilities: [50] Express (v1) Legacy Endpoint, MSI 01 DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us ExtTag- AttnBtn- AttnInd- PwrInd- RBE- FLReset- DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported- RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop- MaxPayload 128 bytes, MaxReadReq 512 bytes DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq+ AuxPwr- TransPend- LnkCap: Port #1, Speed 2.5GT/s, Width x1, ASPM L0s, Latency L0 <1us, L1 <16us ClockPM- Surprise- LLActRep- BwNot- LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+ ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- Capabilities: [70] MSI: Enable- Count=1/1 Maskable- 64bit- Address: 00000000 Data: 0000 Kernel driver in use: pata_jmicron Kernel modules: pata_jmicron >From hdparm: /dev/sda: Model=TRANSCEND, FwRev=20091215, SerialNo=20100521 000008F4 Config={ HardSect NotMFM Fixed DTR>10Mbs } RawCHS=16383/15/63, TrkSize=0, SectSize=576, ECCbytes=4 BuffType=DualPort, BuffSize=1kB, MaxMultSect=1, MultSect=off CurCHS=65535/15/63, CurSects=61930575, LBA=yes, LBAsects=125059072 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: mdma0 mdma1 mdma2 UDMA modes: udma0 udma1 *udma2 udma3 udma4 udma5 udma6 AdvancedPM=yes: disabled (255) WriteCache=disabled * signifies the current active mode hdparm cannot set a higher speed mode: $ sudo hdparm -X udma5 /dev/sda /dev/sda: setting xfermode to 69 (UltraDMA mode5) SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 00 00 00 00 24 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ProblemType: Bug DistroRelease: Ubuntu 11.04 Package: linux-image-2.6.38-1-generic 2.6.38-1.28 Regression: No Reproducible: Yes ProcVersionSignature: Ubuntu 2.6.38-1.28-generic 2.6.38-rc2 Uname: Linux 2.6.38-1-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23. AplayDevices: **** List of PLAYBACK Hardware Devices **** card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: damon 1362 F.... pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xf2820000 irq 45' Mixer name : 'Conexant CX20585' Components : 'HDA:14f15069,17aa2132,00100302' Controls : 8 Simple ctrls : 5 Card29.Amixer.info: Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 6HHT14WW-1.02' Mixer name : 'ThinkPad EC 6HHT14WW-1.02' Components : '' Controls : 1 Simple ctrls : 1 Card29.Amixer.values: Simple mixer control 'Console',0 Capabilities: pswitch pswitch-joined penum Playback channels: Mono Mono: Playback [on] Date: Fri Feb 4 21:48:33 2011 HibernationDevice: RESUME=UUID=bc754809-bf19-44d5-ace4-6e4028ee147c InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110202) MachineType: LENOVO 2801CTO ProcEnviron: LANGUAGE=en_US:en PATH=(custom, user) LANG=en_US.UTF-8 LC_MESSAGES=en_US.utf8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-1-generic root=UUID=1a217fba-4cce-4ad8-b624-8d17416b2f1c ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-2.6.38-1-generic N/A linux-backports-modules-2.6.38-1-generic N/A linux-firmware 1.46 SourcePackage: linux dmi.bios.date: 12/09/2010 dmi.bios.vendor: LENOVO dmi.bios.version: 6HET34WW (1.19 ) dmi.board.name: 2801CTO dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr6HET34WW(1.19):bd12/09/2010:svnLENOVO:pn2801CTO:pvrThinkPadT400s:rvnLENOVO:rn2801CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 2801CTO dmi.product.version: ThinkPad T400s dmi.sys.vendor: LENOVO ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug kernel-config natty needs-upstream-testing running-unity -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/713487 Title: ExpressCard compact flash card DMA setting is wrong -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
