Screen blinks randomly on external monitor
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
xorg (Ubuntu) |
Won't Fix
|
Undecided
|
Unassigned |
Bug Description
Hardware: Asus F8Va laptop (Core 2 Duo P8600, ATI HD3650, 1440x900)
OS: Ubuntu 9.04 beta x64 (Wubi installation inside Windows Vista Home Premium x64 SP1)
External monitor (Samsung SyncMaster 2493HM, 1920x1200), connected via HDMI, blinks several times a minute, randomly. When there is no user activity, it doesn't seem to blink however.
By "blinking" I mean, the monitor goes off and then on, like it usually does when it changes resolution, only resolution doesn't change. Also, when I move windows around, thin horizontal stripes flash in fraction of second from time to time (only on external monitor).
Screen configuration:
Samsung 24": On
Resolution: 1920x1200
Refresh rate: 60 Hz
Rotation: Normal
Laptop 14": On
Resolution: 1440x900
Refresh rate: 67 Hz
Rotation: Normal
Mirror screens: unchecked
Relative position of screens (physical and in Display Preferences) laptop screen below the external screen, centred.
tags: | added: jaunty |
Changed in xorg (Ubuntu): | |
status: | New → Confirmed |
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: intel,snd_ pcm_oss oss,snd_ seq_midi dummy,snd_ seq_oss, snd_seq_ midi,snd_ seq_midi_ event dummy,snd_ seq_oss, snd_seq_ midi,snd_ rawmidi, snd_seq thinkpad_ acpi intel,snd_ pcm_oss, snd_mixer_ oss,snd_ pcm,snd_ seq_oss, snd_rawmidi, snd_seq, snd_timer, snd_seq_ device
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_
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_
pcmcia 44748 0
snd_seq 56880 6 snd_seq_
mac80211 217208 1 iwl3945
iTCO_wdt 19108 0
snd_timer 29704 2 snd_pcm,snd_seq
snd_seq_device 14988 5 snd_seq_
joydev 18368 0
iTCO_vendor_support 11652 1 iTCO_wdt
thinkpad_acpi 66560 0
usbhid 42336 0
led_class 12036 2 iwl3945,
snd 62628 16 snd_hda_
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...