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X11 display trashed



Hello!

I found a incomprehensible bug in my X11 (3.3.6) display. Sometimes my
screen was trashed. For a long time I couldn't find an "how to repeat"
routine. Last night I found one :-)

I just started X11 via startx, opened xterm, inserted a cd-rom in a drive
and mounted it as root. Screen was trashed... xterms fonts was unreadable,
moving windows causes more garbage on the screen.

I created some screen dumps (xwd -root -out):
http://popierdulka.pdi.net/~rammy/before.jpg
http://popierdulka.pdi.net/~rammy/after.jpg
http://popierdulka.pdi.net/~rammy/moved.jpg

This bug appear after first mount only. If I mount my cd-rom from a shell
(without X11), then start X11 and umount/mount a cd-rom several times -
everything is OK.

Tested with fvwm1-1.24r and twm on Merlin gfx board. This bug not appear
on Amiga Custom Chip display.

What should I do? How can I debug this?


PCh




System informations:
~/.xserverrc:
Xwrapper -dev /dev/grf6 -mode 1 -flipPixels +kb -xkbmap pl_eur

/etc/grfmodes:
# Mode: 800x600 256colors  56kHz  84Hz   active
1 56000000 800 600 8 800 816 880 960 599 602 610 658 default

NetBSD 1.6.2 (ZBYTNICZKA) #0: Wed Jun 23 03:23:12 UTC 2004
    pch@zbytniczka:/usr/src/sys/arch/amiga/compile/ZBYTNICZKA
Amiga 4000 (m68040 CPU/MMU/FPU)
total memory = 16384 KB
avail memory = 13464 KB
using 115 buffers containing 920 KB of memory
memory segment 0 at 07000000 size 01000000
memory segment 1 at 00000000 size 00200000
mainbus0 (root)
clock0 at mainbus0: CIA B system hz 100 hardware hz 709379
Calibrating delay loop... 94/1024 us
a34kbbc0 at mainbus0
ser0 at mainbus0: input fifo 512 output fifo 32
par0 at mainbus0
kbd0 at mainbus0: CIA A type Amiga
ms0 at mainbus0
fdc0 at mainbus0: dmabuf pa 0x1f7fd8: dmabuf ka 0x89b1fd8
fd0 at fdc0 unit 0: 3.5dd 80 cyl, 2 head, 11 sec [9 sec], 512 bytes/sec
wdc0 at mainbus0
atapibus0 at wdc0 channel 0: 2 targets
cd0 at atapibus0 drive 1: <XF00D1 E, , G07> type 5 cdrom removable
cd0: drive supports PIO mode 3
wd0 at wdc0 channel 0 drive 0: <ST38422A>
wd0: drive supports 16-sector PIO transfers, LBA addressing
wd0: 8223 MB, 16383 cyl, 16 head, 63 sec, 512 bytes/sect x 16841664 
sectors
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 4 (Ultra/66)
aftsc0 at mainbus0
aftsc0: siop id 7 reset V2
scsibus0 at aftsc0: 8 targets, 8 luns per target
aucc0 at mainbus0
audio0 at aucc0: half duplex
zbus0 at mainbus0: i/o size 0x00400000
grfet0 at zbus0 pa 0xe90000 man/pro 2117/4
grf6 at grfet0: width 640 height 480 colors 16
ite6 at grf6: rows 60 cols 80 repeat at (30/100)s next at (10/100)s has 
keyboard
grfet: 4MB Merlin with Tseng ETW32 and BrookTree Bt482 DAC being used
grfet1 at zbus0 pa 0x40000000 man/pro 2117/3
ite at grfet1:  not configured
scsibus0: waiting 2 seconds for devices to settle...
aftsc0: target 0 now synchronous, period=100ns, offset=8
sd0 at scsibus0 target 0 lun 0: <SEAGATE, ST15150N, 0020> SCSI2 0/direct 
fixed
sd0: 4095 MB, 3712 cyl, 21 head, 107 sec, 512 bytes/sect x 8388315 sectors
4 views configured
root on sd0a dumps on sd0b
root file system type: ffs


-- 
       .-=-.    .-=-.   Paweł Chwałowski (Rammy/#AmigaPL)
      (~(o)~)  (~(o)~)  A4000T/040/16MB/Merlin4MB/CTX-VL500/BJC-250
   jgs '-=-'    '-=-'   GG:262928 UIN:109823766 JID:rammy%chrome.pl@localhost



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