I have gentoo-sources kernel, 2.6.11-r8. I built it initially by gentoolkit (or whatever that damned program is called), and when I noticed this problem and looked it up, I attempted a manual build (with the same .config, as copied from /proc/config.gz when running under the auto-built version). Any attempt at accessing /dev/sda locks up the underlying usb device (in my case, an iPod Photo 30GB). I looked up the problem, and found several others (atleast in other linux distros) have the same problem. Most pages seem to resolve the problem by commenting out, or otherwise de-selecting CONFIG_EFI_PARTITION. When I saw this wasn't in /proc/config.gz, I was confused, but attempted to manually build my kernel anyway. So, here I am, with 2.6.11-r8, CONFIG_EFI_PARTITION is off, and still get this error. I assume one of the gentoo-specific patches affects EFI partitioning (or atleast has the same effect). dmesg shows the iPod, and attempts at reading a very late sector on the iPod's hd. {abbreviated}... scsi0 : SCSI emulation for USB Mass Storage devices usbcore: registered new driver usb-storage USB Mass Storage support registered. usb-storage: device found at 3 usb-storage: waiting for device to settle before scanning PHY ID: 1410cc2, addr: 0 Vendor: Apple Model: iPod Rev: 1.62 Type: Direct-Access ANSI SCSI revision: 00 SCSI device sda: 58605120 512-byte hdwr sectors (30006 MB) sda: Write Protect is off sda: Mode Sense: 64 00 00 08 sda: assuming drive cache: write through SCSI device sda: 58605120 512-byte hdwr sectors (30006 MB) sda: Write Protect is off sda: Mode Sense: 64 00 00 08 sda: assuming drive cache: write through sda: [mac] sda1 sda2 sda3 Attached scsi removable disk sda at scsi0, channel 0, id 0, lun 0 Attached scsi generic sg0 at scsi0, channel 0, id 0, lun 0, type 0 ... end_request: I/O error, dev sda, sector 58605112 Buffer I/O error on device sda, logical block 7325639 end_request: I/O error, dev sda, sector 0 Buffer I/O error on device sda, logical block 0 end_request: I/O error, dev sda, sector 1024 Buffer I/O error on device sda, logical block 128 Buffer I/O error on device sda, logical block 129 Buffer I/O error on device sda, logical block 130 Buffer I/O error on device sda, logical block 131 ... It goes on to attempt many logical blocks, and sectors. Google searches brought up that the issue is in part the iPod's fault. It claims to have more sectors than it really does. EFI, from my understanding, attempts to use one of those late sectors (one that the iPod claims to have, but doesn't really have), and in its absence locks up all future calls ont he 'Pod. I consider this a major bug, since iPods are very common, my hardware is pretty much stock, and have made very few modifications to the system (infact, I ignored the problem despite noticing it after a clean installation). Reproducible: Always Steps to Reproduce: 1. ACCEPT_KEYWORDS=~ppc emerge gentoo-sources 2. Plug in iPod 3. mac-fdisk -l /dev/sda Actual Results: "mac-fdisk: Can't read block 0 from file (Input/output error)" Also, similar "end_request..." and "Buffer I/O error..." messages as mentioend in the details section. Expected Results: mac-fdisk should list the partitions on stdout and exit. Gentoo Base System version 1.4.16 Portage 2.0.51.19 (default-linux/ppc/2005.0, gcc-3.4.3-20050110, glibc-2.3.4.20041102-r0, 2.6.10-gentoo-r8 ppc) ================================================================= System uname: 2.6.10-gentoo-r8 ppc 7447A, altivec supported Python: dev-lang/python-2.3.5 [2.3.5 (#1, May 15 2005, 01:38:41)] distcc 2.18.3 powerpc-unknown-linux-gnu (protocols 1 and 2) (default port 3632) [enabled] ccache version 2.4 [enabled] dev-lang/python: 2.3.5 sys-apps/sandbox: [Not Present] sys-devel/autoconf: 2.59-r6, 2.13 sys-devel/automake: 1.7.9-r1, 1.8.5-r3, 1.5, 1.4_p6, 1.6.3, 1.9.4 sys-devel/binutils: 2.15.90.0.3-r3 sys-devel/libtool: 1.5.16 virtual/os-headers: 2.6.8.1-r4 ACCEPT_KEYWORDS="ppc ~ppc" AUTOCLEAN="yes" CFLAGS="-O2 -mcpu=7400 -mtune=powerpc -maltivec -fno-strict-aliasing -pipe" CHOST="powerpc-unknown-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3/share/config /usr/lib/X11/xkb /usr/lib/mozilla/defaults/pref /usr/share/config /var/qmail/control" CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/texmf/web2c /etc/env.d" CXXFLAGS="-O2 -mcpu=7400 -mtune=powerpc -maltivec -fno-strict-aliasing -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="autoaddcvs autoconfig ccache distcc distlocks sandbox sfperms strict" GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/Linux/distributions/gentoo" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="ppc X alsa altivec berkdb bitmap-fonts bzip2 cdda cdparanoia cdr crypt cups curl divx doc dvd dvdr emboss esd fam ffmpeg fortran gcj gd gif gnome gnustep gpm gtk gtk2 gzip imlib ipv6 java javascript jpeg kde ldap libwww mad motif mozilla moznomail mp3 mpeg ncurses neXt nls objc offensive ogg oggvorbis opengl pam pcmcia pdflib perl png python qt quicktime readline samba sdl slang spell ssl symlink tcltk tcpd tetex tiff truetype truetype-fonts type1-fonts unicode usb vcd vorbis xine xml2 xmms xprint xv xvid zlib userland_GNU kernel_linux elibc_glibc" Unset: ASFLAGS, CBUILD, CTARGET, LANG, LC_ALL, LDFLAGS, LINGUAS, PORTDIR_OVERLAY
i incorrectly wrote in my kernel vers as 2.6.11-r8. seems i've had 2.6.10-gentoo-r8 this whole time. i assume the problem still exists in 2.6.11, and I'm about to emerge those sources to test. -tF
If it is still broken in 2.6.11, it would be worthwhile testing 2.6.12-rc4 also. Let us know how you get on.
(In reply to comment #2) > If it is still broken in 2.6.11, it would be worthwhile testing 2.6.12-rc4 also. > Let us know how you get on. didn't even occur to me to try a vanilla-sources version. i'll skip over gentoo-sources and try 2.6.12-rc4 from vanilla-sources. currently a little backed up, cuz i have gcc 3.4 and apparently it causes some trouble on linking the kernel (somethign about truncated memory or something. i looked it up and apparently gcc<3.4 works, so i'll try emerging gcc3.2 or so, then redoing the kernel).
You can install and use both gcc 3.3 and 3.4 alongside each other, play around with gcc-config
(In reply to comment #4) > You can install and use both gcc 3.3 and 3.4 alongside each other, play around > with gcc-config turns out my gcc problem was fixed with an update to binutils. i had tried 3.2 (apparently there werent any versions of 3.3 for ppc/~ppc? whatever doesn't really matter). i installed vanilla-sources 2.6.12-rc4. Same basic config from all my other versions, only diff is whatever make oldconfig gives me different for .12 as opposed to .11's. It Works! this is so cool, I've never had an ipod work in linux before. :) So, for now I'll be contented with a vanilla kernel. I'll try out the latest gentoo patched version in a few days.
OK. Marking as solved in linux 2.6.12. If you could test the latest gentoo-sources-2.6.11 it would be appreciated, then we could make more progress earlier (i.e. finding out why 2.6.11 is not keyworded on ppc...)
2.6.12 marked ~ppc
