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SubjectPROBLEM: floppy and dma
I am experiencing serious problems with the 2.2.0-pre8 kernel. I keep
getting
the kernel message

DMA memory shortage. Temporarily falling back on virtual DMA

when accessing my floppy drives. As you can see below, I use DMA for my
hard
disks. I have a sound card but I did not use it at the time of the error
(at
least not first). Though, it appears to me that I am getting these
errors
faster when I use the sound card.

The floppy driver was not configured as a module at first. I recompiled
it as
module and rebooted, but the problem didn't vanish. At least I am able
to
restart the floppy driver in case of an error now.

I used mtools-3.9.1 and fdutils-5.2 to produce and work on XDF disks.
xdfcopy
from fdutils gives me this:

error during command execution
c5 01 00 00 81 02 00 1b ff
41 04 00 00 00 8c 02
No Data - unreadable
read/write: Paramètre invalide.

I have never had such problems before and have been using almost every
single
kernel version out of the last 50 or so.

Here are the last few lines from /var/log/messages:

Jan 19 18:24:38 ringding kernel: PPP: ppp line discipline successfully
unregistered
Jan 19 18:24:47 ringding /sbin/mingetty[24031]: tty1: invalid character
^L in login name
Jan 19 18:44:06 ringding login[24060]: ROOT LOGIN on `tty4'
Jan 19 18:55:14 ringding login[32687]: ROOT LOGIN on `tty4'
Jan 19 19:12:29 ringding -- MARK --
Jan 19 19:32:29 ringding -- MARK --
Jan 19 19:52:29 ringding -- MARK --
Jan 19 20:12:29 ringding -- MARK --
Jan 19 20:32:29 ringding -- MARK --
Jan 19 20:33:06 ringding login[22922]: ROOT LOGIN on `tty4'
Jan 19 20:52:29 ringding -- MARK --
Jan 19 21:08:28 ringding login[5218]: invalid password for `UNKNOWN' on
`tty1'
Jan 19 21:32:29 ringding -- MARK --
Jan 19 21:52:29 ringding -- MARK --
Jan 19 22:12:29 ringding -- MARK --
Jan 19 22:14:38 ringding login[22949]: ROOT LOGIN on `tty4'
Jan 19 22:19:16 ringding kernel: DMA memory shortage. Temporarily
falling back on virtual DMA
Jan 19 22:19:16 ringding kernel: DMA memory shortage. Temporarily
falling back on virtual DMA
Jan 19 22:20:39 ringding kernel: end_request: I/O error, dev 02:00
(floppy), sector 0
Jan 19 22:25:37 ringding kernel: Soundblaster audio driver Copyright (C)
by Hannu Savolainen 1993-1996
Jan 19 22:25:37 ringding kernel: SB 4.13 detected OK (220)
Jan 19 22:26:53 ringding init: Switching to runlevel: 6
Jan 19 22:26:56 ringding exiting on signal 15
Jan 19 22:27:21 ringding syslogd 1.3-3: restart.
Jan 19 22:27:21 ringding kernel: klogd 1.3-3, log source = /proc/kmsg
started.
Jan 19 22:27:21 ringding kernel: Cannot find map file.
Jan 19 22:27:21 ringding kernel: No module symbols loaded.
Jan 19 22:27:21 ringding kernel: Linux version 2.2.0-pre8
(kernel@ringding.ringding.at) (gcc version egcs-2.91.57 19980901
(egcs-1.1 release)) #3 Tue Jan 19 15:55:37 CET 1999
Jan 19 22:27:21 ringding kernel: Console: colour VGA+ 80x25
Jan 19 22:27:21 ringding kernel: Calibrating delay loop... 132.71
BogoMIPS
Jan 19 22:27:21 ringding kernel: Memory: 47176k/49152k available (704k
kernel code, 412k reserved, 824k data, 36k init)
Jan 19 22:27:21 ringding kernel: Checking if this processor honours the
WP bit even in supervisor mode... Ok.
Jan 19 22:27:21 ringding kernel: CPU: Cyrix 6x86 2x Core/Bus Clock
stepping 07
Jan 19 22:27:21 ringding kernel: Checking 386/387 coupling... OK, FPU
using exception 16 error reporting.
Jan 19 22:27:21 ringding kernel: Checking 'hlt' instruction... OK.
Jan 19 22:27:21 ringding kernel: POSIX conformance testing by UNIFIX
Jan 19 22:27:21 ringding kernel: PCI: PCI BIOS revision 2.10 entry at
0xf03f0
Jan 19 22:27:21 ringding kernel: PCI: Using configuration type 1
Jan 19 22:27:21 ringding kernel: PCI: Probing PCI hardware
Jan 19 22:27:21 ringding kernel: Linux NET4.0 for Linux 2.2
Jan 19 22:27:21 ringding kernel: Based upon Swansea University Computer
Society NET3.039
Jan 19 22:27:21 ringding kernel: NET4: Unix domain sockets 1.0 for Linux
NET4.0.
Jan 19 22:27:21 ringding kernel: NET4: Linux TCP/IP 1.0 for NET4.0
Jan 19 22:27:21 ringding kernel: IP Protocols: ICMP, UDP, TCP
Jan 19 22:27:21 ringding kernel: Starting kswapd v 1.5
Jan 19 22:27:21 ringding kernel: Serial driver version 4.27 with no
serial options enabled
Jan 19 22:27:21 ringding kernel: ttyS00 at 0x03f8 (irq = 4) is a 16550A
Jan 19 22:27:21 ringding kernel: ttyS01 at 0x02f8 (irq = 3) is a 16550A
Jan 19 22:27:21 ringding kernel: pty: 256 Unix98 ptys configured
Jan 19 22:27:21 ringding kernel: loop: registered device at major 7
Jan 19 22:27:21 ringding kernel: PIIX3: IDE controller on PCI bus 00 dev
39
Jan 19 22:27:21 ringding kernel: PIIX3: not 100% native mode: will probe
irqs later
Jan 19 22:27:21 ringding kernel: ide0: BM-DMA at 0xe800-0xe807, BIOS
settings: hda:pio, hdb:pio
Jan 19 22:27:21 ringding kernel: ide1: BM-DMA at 0xe808-0xe80f, BIOS
settings: hdc:pio, hdd:pio
Jan 19 22:27:21 ringding kernel: hda: CDA26803I SE, ATAPI CDROM drive
Jan 19 22:27:21 ringding kernel: hdc: QUANTUM FIREBALL EX6.4A, ATA DISK
drive
Jan 19 22:27:21 ringding kernel: hdd: ST32120A, ATA DISK drive
Jan 19 22:27:21 ringding kernel: ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Jan 19 22:27:21 ringding kernel: ide1 at 0x170-0x177,0x376 on irq 15
Jan 19 22:27:21 ringding kernel: hdc: QUANTUM FIREBALL EX6.4A, 6149MB
w/418kB Cache, CHS=13328/15/63, (U)DMA
Jan 19 22:27:21 ringding kernel: hdd: ST32120A, 2014MB w/0kB Cache,
CHS=4092/16/63
Jan 19 22:27:21 ringding kernel: hda: ATAPI 2X CDROM drive, 120kB Cache
Jan 19 22:27:21 ringding kernel: Uniform CDROM driver Revision: 2.52
Jan 19 22:27:22 ringding kernel: Floppy drive(s): fd0 is 1.44M, fd1 is
1.44M
Jan 19 22:27:22 ringding kernel: FDC 0 is a post-1991 82077
Jan 19 22:27:22 ringding kernel: Partition check:
Jan 19 22:27:22 ringding kernel: hdc: [PTBL] [784/255/63] hdc1 hdc2
hdc3 < hdc5 hdc6 hdc7 hdc8 hdc9 hdc10 hdc11 hdc12 > hdc4
Jan 19 22:27:22 ringding kernel: hdd: [PTBL] [1023/64/63] hdd1 hdd2 <
hdd5 hdd6 hdd7 > hdd3 hdd4
Jan 19 22:27:22 ringding kernel: VFS: Mounted root (ext2 filesystem)
readonly.
Jan 19 22:27:22 ringding kernel: Freeing unused kernel memory: 36k freed
Jan 19 22:27:28 ringding login[65]: ROOT LOGIN on `tty4'
Jan 19 22:28:28 ringding kernel: Soundblaster audio driver Copyright (C)
by Hannu Savolainen 1993-1996
Jan 19 22:28:28 ringding kernel: SB 4.13 detected OK (220)
Jan 19 22:28:45 ringding login[109]: ROOT LOGIN on `tty4'
Jan 19 22:28:47 ringding kernel: EXT2-fs warning: mounting fs with
errors, running e2fsck is recommended
Jan 19 22:28:48 ringding kernel: EXT2-fs error (device 16:04):
ext2_check_inodes_bitmap: Wrong free inodes count in group 2, stored =
2011, counted = 2009
Jan 19 22:34:42 ringding login[1206]: ROOT LOGIN on `tty1'
Jan 19 22:39:53 ringding kernel: DMA memory shortage. Temporarily
falling back on virtual DMA
Jan 19 22:39:53 ringding last message repeated 2 times
Jan 19 22:41:04 ringding login[2368]: ROOT LOGIN on `tty2'
Jan 19 22:42:49 ringding login[2672]: ROOT LOGIN on `tty2'
Jan 19 22:44:04 ringding init: Switching to runlevel: 6
Jan 19 22:44:04 ringding exiting on signal 15
Jan 19 22:44:27 ringding syslogd 1.3-3: restart.
Jan 19 22:44:27 ringding kernel: klogd 1.3-3, log source = /proc/kmsg
started.
Jan 19 22:44:27 ringding kernel: Cannot find map file.
Jan 19 22:44:27 ringding kernel: No module symbols loaded.
Jan 19 22:44:27 ringding kernel: Linux version 2.2.0-pre8
(kernel@ringding.ringding.at) (gcc version egcs-2.91.57 19980901
(egcs-1.1 release)) #4 Tue Jan 19 22:38:24 CET 1999
Jan 19 22:44:27 ringding kernel: Console: colour VGA+ 80x25
Jan 19 22:44:27 ringding kernel: Calibrating delay loop... 132.71
BogoMIPS
Jan 19 22:44:27 ringding kernel: Memory: 47252k/49152k available (636k
kernel code, 412k reserved, 820k data, 32k init)
Jan 19 22:44:27 ringding kernel: Checking if this processor honours the
WP bit even in supervisor mode... Ok.
Jan 19 22:44:27 ringding kernel: CPU: Cyrix 6x86 2x Core/Bus Clock
stepping 07
Jan 19 22:44:27 ringding kernel: Checking 386/387 coupling... OK, FPU
using exception 16 error reporting.
Jan 19 22:44:27 ringding kernel: Checking 'hlt' instruction... OK.
Jan 19 22:44:27 ringding kernel: POSIX conformance testing by UNIFIX
Jan 19 22:44:27 ringding kernel: PCI: PCI BIOS revision 2.10 entry at
0xf03f0
Jan 19 22:44:27 ringding kernel: PCI: Using configuration type 1
Jan 19 22:44:27 ringding kernel: PCI: Probing PCI hardware
Jan 19 22:44:27 ringding kernel: Linux NET4.0 for Linux 2.2
Jan 19 22:44:27 ringding kernel: Based upon Swansea University Computer
Society NET3.039
Jan 19 22:44:27 ringding kernel: NET4: Unix domain sockets 1.0 for Linux
NET4.0.
Jan 19 22:44:27 ringding kernel: NET4: Linux TCP/IP 1.0 for NET4.0
Jan 19 22:44:27 ringding kernel: IP Protocols: ICMP, UDP, TCP
Jan 19 22:44:27 ringding kernel: Starting kswapd v 1.5
Jan 19 22:44:27 ringding kernel: Serial driver version 4.27 with no
serial options enabled
Jan 19 22:44:27 ringding kernel: ttyS00 at 0x03f8 (irq = 4) is a 16550A
Jan 19 22:44:27 ringding kernel: ttyS01 at 0x02f8 (irq = 3) is a 16550A
Jan 19 22:44:27 ringding kernel: pty: 256 Unix98 ptys configured
Jan 19 22:44:27 ringding kernel: loop: registered device at major 7
Jan 19 22:44:27 ringding kernel: PIIX3: IDE controller on PCI bus 00 dev
39
Jan 19 22:44:27 ringding kernel: PIIX3: not 100% native mode: will probe
irqs later
Jan 19 22:44:27 ringding kernel: ide0: BM-DMA at 0xe800-0xe807, BIOS
settings: hda:pio, hdb:pio
Jan 19 22:44:27 ringding kernel: ide1: BM-DMA at 0xe808-0xe80f, BIOS
settings: hdc:pio, hdd:pio
Jan 19 22:44:27 ringding kernel: hda: CDA26803I SE, ATAPI CDROM drive
Jan 19 22:44:27 ringding kernel: hdc: QUANTUM FIREBALL EX6.4A, ATA DISK
drive
Jan 19 22:44:27 ringding kernel: hdd: ST32120A, ATA DISK drive
Jan 19 22:44:27 ringding kernel: ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Jan 19 22:44:27 ringding kernel: ide1 at 0x170-0x177,0x376 on irq 15
Jan 19 22:44:27 ringding kernel: hdc: QUANTUM FIREBALL EX6.4A, 6149MB
w/418kB Cache, CHS=13328/15/63, (U)DMA
Jan 19 22:44:27 ringding kernel: hdd: ST32120A, 2014MB w/0kB Cache,
CHS=4092/16/63
Jan 19 22:44:27 ringding kernel: Partition check:
Jan 19 22:44:27 ringding kernel: hdc: [PTBL] [784/255/63] hdc1 hdc2
hdc3 < hdc5 hdc6 hdc7 hdc8 hdc9 hdc10 hdc11 hdc12 > hdc4
Jan 19 22:44:27 ringding kernel: hdd: [PTBL] [1023/64/63] hdd1 hdd2 <
hdd5 hdd6 hdd7 > hdd3 hdd4
Jan 19 22:44:27 ringding kernel: VFS: Mounted root (ext2 filesystem)
readonly.
Jan 19 22:44:27 ringding kernel: Freeing unused kernel memory: 32k freed
Jan 19 22:44:31 ringding login[65]: ROOT LOGIN on `tty4'
Jan 19 22:45:00 ringding kernel: inserting floppy driver for 2.2.0-pre8
Jan 19 22:45:00 ringding kernel: Floppy drive(s): fd0 is 1.44M, fd1 is
1.44M
Jan 19 22:45:00 ringding kernel: FDC 0 is a post-1991 82077
Jan 19 22:45:07 ringding kernel: hda: ATAPI 2X CDROM drive, 120kB Cache
Jan 19 22:45:07 ringding kernel: Uniform CDROM driver Revision: 2.52
Jan 19 22:45:07 ringding kernel: cdrom: open failed.
Jan 19 22:45:21 ringding kernel: Uniform CD-ROM driver unloaded
Jan 19 22:45:51 ringding kernel: inserting floppy driver for 2.2.0-pre8
Jan 19 22:45:51 ringding kernel: Floppy drive(s): fd0 is 1.44M, fd1 is
1.44M
Jan 19 22:45:51 ringding kernel: FDC 0 is a post-1991 82077
Jan 19 22:56:24 ringding kernel: Soundblaster audio driver Copyright (C)
by Hannu Savolainen 1993-1996
Jan 19 22:56:24 ringding kernel: SB 4.13 detected OK (220)
Jan 19 23:00:13 ringding kernel: inserting floppy driver for 2.2.0-pre8
Jan 19 23:00:13 ringding kernel: Floppy drive(s): fd0 is 1.44M, fd1 is
1.44M
Jan 19 23:00:13 ringding kernel: FDC 0 is a post-1991 82077
Jan 19 23:07:01 ringding kernel: DMA memory shortage. Temporarily
falling back on virtual DMA
Jan 19 23:07:01 ringding last message repeated 6 times
Jan 19 23:07:30 ringding kernel: inserting floppy driver for 2.2.0-pre8
Jan 19 23:07:30 ringding kernel: Floppy drive(s): fd0 is 1.44M, fd1 is
1.44M
Jan 19 23:07:30 ringding kernel: FDC 0 is a post-1991 82077
Jan 19 23:07:42 ringding kernel: DMA memory shortage. Temporarily
falling back on virtual DMA
Jan 19 23:07:42 ringding last message repeated 6 times
Jan 19 23:07:59 ringding kernel: inserting floppy driver for 2.2.0-pre8
Jan 19 23:07:59 ringding kernel: Floppy drive(s): fd0 is 1.44M, fd1 is
1.44M
Jan 19 23:07:59 ringding kernel: FDC 0 is a post-1991 82077
Jan 19 23:07:59 ringding kernel: DMA memory shortage. Temporarily
falling back on virtual DMA
Jan 19 23:07:59 ringding kernel: DMA memory shortage. Temporarily
falling back on virtual DMA
Jan 19 23:09:19 ringding kernel: inserting floppy driver for 2.2.0-pre8
Jan 19 23:09:19 ringding kernel: Floppy drive(s): fd0 is 1.44M, fd1 is
1.44M
Jan 19 23:09:19 ringding kernel: FDC 0 is a post-1991 82077

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