dd if=/dev/scd0 of=/file.iso
dd if=/dev/hdc of=/file.iso
give
---Jun 28 19:28:33 deneb kernel: I/O error: dev 0b:00, sector 1159912 Jun 28 19:28:33 deneb kernel: I/O error: dev 0b:00, sector 1160064
(note) the sectors do change if I change de medium, but on the same medium the falty sectores are always the same. All the cd's are in top conditions without a scratch and clean.
---(with and without the scsi emulation) are pointless. On my former HP 9100c cdr/rw writer and Phillips 40x reader this didn't happen. What is also curious is that original brand cd's (like a game or the maxim's cd data catalog) is red 100% by this Asus cd reader. I thought is as not an error with the interface but with cdrecord but after testing a cd burned with nero (windows os) the same happened. If I change brands the same happens too (tested TDK and Sony).
As a final note it seems that when mounted the cd can be accessed perfectly (or so it seems).
I would write a patch/workaround myself but it seems that I can't understand this behaviour.
Hoping that this report was useful.. best regards, Marco Ferra.
--- Debian GNU/Linux 3.0r1 ---
My configuration:
Motherboard: ASUS CUV4X
cat /proc/version Linux version 2.4.18 (root@deneb) (gcc version 2.95.4 20011002 (Debian prerelease)) #1 Mon Jun 23 00:27:00 WEST 2003
cat /proc/version processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 8 model name : Pentium III (Coppermine) stepping : 3 cpu MHz : 701.626 cache size : 256 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr sse bogomips : 1399.19
cat /proc/modules ipt_state 576 2 ipt_mac 640 0 (unused) ipt_limit 960 0 (unused) ipt_LOG 3072 0 (unused) ip_conntrack_irc 2400 0 (unused) ip_conntrack_ftp 3136 0 (unused) ip_conntrack 12884 3 [ipt_state ip_conntrack_irc ip_conntrack_ftp] mga 102480 1 agpgart 12448 3
(note: scsi emulation is directly on the kernel image)
cat /proc/ioports
0000-001f : dma1 0020-003f : pic1 0040-005f : timer 0060-006f : keyboard 0080-008f : dma page reg 00a0-00bf : pic2 00c0-00df : dma2 00f0-00ff : fpu 0170-0177 : ide1 01f0-01f7 : ide0 02f8-02ff : serial(set) 0376-0376 : ide1 0378-037a : parport0 03c0-03df : vga+ 03f6-03f6 : ide0 03f8-03ff : serial(set) 0cf8-0cff : PCI conf1 b400-b43f : Ensoniq ES1371 [AudioPCI-97] b400-b43f : es1371 b800-b8ff : Realtek Semiconductor Co., Ltd. RTL-8139 b800-b8ff : 8139too d000-d01f : VIA Technologies, Inc. UHCI USB (#2) d000-d01f : usb-uhci d400-d41f : VIA Technologies, Inc. UHCI USB d400-d41f : usb-uhci d800-d80f : VIA Technologies, Inc. Bus Master IDE d800-d807 : ide0 d808-d80f : ide1 e400-e4ff : VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] e800-e80f : VIA Technologies, Inc. VT82C686 [Apollo Super ACPI]
cat /proc/iomem 00000000-0009fbff : System RAM 0009fc00-0009ffff : reserved 000a0000-000bffff : Video RAM area 000c0000-000c7fff : Video ROM 000f0000-000fffff : System ROM 00100000-13febfff : System RAM 00100000-002343e9 : Kernel code 002343ea-00292b77 : Kernel data 13fec000-13feefff : ACPI Tables 13fef000-13ffefff : reserved 13fff000-13ffffff : ACPI Non-volatile Storage f8000000-f80000ff : Realtek Semiconductor Co., Ltd. RTL-8139 f8000000-f80000ff : 8139too f8800000-f9efffff : PCI Bus #01 f8800000-f8ffffff : Matrox Graphics, Inc. MGA G400 AGP f9000000-f9003fff : Matrox Graphics, Inc. MGA G400 AGP f9f00000-fbffffff : PCI Bus #01 fa000000-fbffffff : Matrox Graphics, Inc. MGA G400 AGP fc000000-fdffffff : VIA Technologies, Inc. VT8605 [ProSavage PM133] ffff0000-ffffffff : reserved
cat /proc/scsi/scsi Attached devices: Host: scsi0 Channel: 00 Id: 00 Lun: 00 Vendor: ASUS Model: CD-S520/A Rev: 2.0K Type: CD-ROM ANSI SCSI revision: 02 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/