On Thu, 11 May 2006, Dan Sandberg wrote: > I'm trying to boot from a SanDisk Cruzer Micro 512MB USB Pen drive but > get a kernel panic. > > The same drive works perfectly if I plug it in after the machine has > booted. I have another 512MB Pen drive ( different manufacturer -- > Lexar Jumpdrive ) which can be booted fine. > > I booted the kernel ( 2.6.16.11 ) with the following options: > root=/dev/sda1 rootdelay=10 > > The 2.6.15.3 kernel exhibits the same symptoms. > > The motherboard is an VIA EPIA MII10000. > > If I disable EHCI in the kernel then the key is bootable, but everything > is very slow ( because it is not USB 2.0 ). > > I'm searched the newsgroups and mailing lists and am surprised to see > that this isn't a common problem. Anyone have any idea? I would > suspect faulty hardware, but the fact that the key works fine once the > computer has been booted seems to make that unlikely. > > I'm not sure how to capture debug information since the problem only > happens when booting from the key. The log below was manually typed:
You have to boot using a serial or network console and set up a second machine to capture the console messages. > [67.8...] Using IPI Shortcut mode > [67.8...] Waiting 10sec before mounting root device... > [72.8...] Vendor: SanDisk Model: Cruzer Micro Rev: 0.2 > [72.8...] Type: Direct-Access ANSI SCSI revision: 02 > [72.8...] SCSI device sda: 1000944 512-byte hdwr sections(512MB) > [72.8...] sda: Write Protect is off > [72.8...] sda: assuming drive cache: write through > [72.8...] SCSI device sda: 1000944 512-byte hdwr sections(512MB) > [72.8...] sda: Write Protect is off > [72.8...] sda: assuming drive cache: write through > [72.8...] sda:<7>usb-storage: queuecommand called > [102....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 > [133....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 > [163....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 > [193....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 > [223....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 > [253....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 > [254....] sd 0:0:0:0: SCSI error: return code = 0x50000 > [254....] end_request: I/O error, dev sda, sector 0 > [254....] Buffer I/O error on device sda, logical block 0 > [284....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 > [314....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 > [344....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 > [374....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 > [404....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 > [435....] usb 1-2: reset high speed USB device using ehci_hcd and address 2 > [435....] sd 0:0:0:0: Attached scsi removable disk sda > [435....] sd 0:0:0:0: Attached scsi generic sg0 type 0 > [435....] VFS: Cannot open root device "sda1" or unknown-block(8,1) > ... kernel panic ... Turn on USB verbose debugging and USB mass storage verbose debugging in the kernel configuration (CONFIG_USB_DEBUG and CONFIG_USB_STORAGE DEBUG). Then capture all the console messages and post them here. Alan Stern ------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
