I too am seeing the same symptoms on my DVI external monitor. It seems
to only happen when the computer is being used or any program is
hanging. I would be willing to provide any further diagnostic
information/steps.
OS: 9.04 release x32 Native install
Hardware: T60p
I have two external monitors only the DVI blinks
Screen config:
NEC 2070NX 20"
Resolution: 1600x1200
Refresh: 60Hz
Rotation: Normal
Connection: DVI
Soyo Topaz S 24"
Resolution: 1920x1200
Refresh: 60 Hz
Rotation: Normal
Connection: VGA
Screens are side by side in a "big desktop" fashion:
xorg.conf:
Section "Monitor"
Identifier "Configured Monitor"
EndSection
Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
SubSection "Display"
Virtual 3520 1200
EndSubSection
EndSection
Section "Device"
Identifier "Configured Video Device"
EndSection
Section "ServerFlags"
Option "DontZap" "False"
EndSection
Video card from lspci:
ATI Technologies Inc M56GL [Mobility FireGL V5250
Driver:
Default driver (open source I think)
Lsmod:
Module Size Used by
aes_i586 15744 0
aes_generic 35880 1 aes_i586
nls_iso8859_1 12032 1
nls_cp437 13696 1
vfat 18816 1
fat 58272 1 vfat
binfmt_misc 16776 1
tun 18820 0
radeon 342816 2
drm 96296 3 radeon
bridge 56340 0
stp 10500 1 bridge
bnep 20224 2
vmnet 47812 14
vmblock 21028 3
vmci 58452 0
vmmon 76912 6
input_polldev 11912 0
lp 17156 0
arc4 9856 2
ecb 10752 2
snd_hda_intel 435636 4
snd_pcm_oss 46336 0
snd_mixer_oss 22656 1 snd_pcm_oss
snd_pcm 82948 3 snd_hda_intel,snd_pcm_oss
snd_seq_dummy 10756 0
snd_seq_oss 37760 0
snd_seq_midi 14336 0
snd_rawmidi 29696 1 snd_seq_midi
iwl3945 97912 0
snd_seq_midi_event 15104 2 snd_seq_oss,snd_seq_midi
pcmcia 44748 0
snd_seq 56880 6
snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
mac80211 217208 1 iwl3945
iTCO_wdt 19108 0
snd_timer 29704 2 snd_pcm,snd_seq
snd_seq_device 14988 5
snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
joydev 18368 0
iTCO_vendor_support 11652 1 iTCO_wdt
thinkpad_acpi 66560 0
usbhid 42336 0
led_class 12036 2 iwl3945,thinkpad_acpi
snd 62628 16
snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
psmouse 61972 0
btusb 19608 2
video 25360 0
intel_agp 34108 0
agpgart 42696 2 drm,intel_agp
ppdev 15620 0
yenta_socket 32396 1
rsrc_nonstatic 19328 1 yenta_socket
pcmcia_core 43540 3 pcmcia,yenta_socket,rsrc_nonstatic
nvram 16396 1 thinkpad_acpi
cfg80211 38032 2 iwl3945,mac80211
soundcore 15200 1 snd
snd_page_alloc 16904 2 snd_hda_intel,snd_pcm
serio_raw 13316 0
nsc_ircc 29328 0
pcspkr 10496 0
output 11008 1 video
parport_pc 40100 1
parport 42220 3 lp,ppdev,parport_pc
irda 197180 1 nsc_ircc
crc_ccitt 10112 1 irda
usb_storage 82880 1
e1000e 121136 0
fbcon 46112 0
tileblit 10752 1 fbcon
font 16384 1 fbcon
bitblit 13824 1 fbcon
softcursor 9984 1 bitblit
--
Screen blinks randomly on external monitor
https://bugs.launchpad.net/bugs/349943
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