Hi, I am running FreeBSD 10.3 amd64.
Over the last couple of months, I have made a major upgrade of my computer - an upgrade which has knocked out virtually everything except the CPU (AMD Athlon X2 270). In phase 1 (about 2 months ago), I moved the motherboard to a new Gigabyte SB970 based board (paired with the the old Athlon CPU) and the hard disk to a Samsung EVO 850 SSD In phase 2 (yesterday), I upgraded other components (new components listed) : PSU (Corsair RM650x), RAM (Kingston HyperX, 8 GB, single piece), DVD drive (Asus DRW-24D5MT), cabinet (Circle 821). The USB peripherals remain the same ; mouse, keyboard, printer, scanner. The USB scanner (Canon MG 2470 Pixma; multi-function device serving purely as scanner) is the one that is of most interest. After phase 2 of the upgrade was over, I have been facing this situation (since yesterday) : If I run 'scanimage -L' as root on the console at ttyv4 (no X), most of the times it returns with a listing of the Canon scanner. At the same time, on ttyv0, I also get the following diagnostics : ata0: FAILURE - odd-sized DMA transfer attempt 5 % 2 ata0: setting up DMA failed Once in about 2-3 tries, the command actually gets totally stuck. Not even Control-C wakes it up. In such cases, the system usually has to be rebooted - sometimes forcibly by hard-pressing the switch on the cabinet. Further, at the time I boot, I sometimes also see the following diagnostics on ttyv0 : (ada0:ata0:0:1:0): READ_DMA48. ACB: 25 00 df ea ff 40 33 00 00 00 01 00 (ada0:ata0:0:1:0): CAM status: Command timeout (ada0:ata0:0:1:0): Retrying command The last time I spotted the above error ("CAM status: Command timeout") was in a single user shell running fsck after an unclean shutdown. No other command except fsck and reboot was given to the system during that session. I am trying to determine whether the errors I am facing are a problem with the hardware; with the kernel; or with the USB code. The only other thing notable I can add is the USB scanner works seamlessly under Windows XP (which serves as my second OS on my dual-boot machine). If anybody can help me determine what is wrong with the system, I shall be highly grateful - I feel practically paralysed after investing so much time, money and energy upgrading the hardware, only to be feeling as if now I am stuck in no man's land. Thanks Manish Jain _______________________________________________ firstname.lastname@example.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"