So noticed this for a couple weeks maybe.
Two scenarios. First one is during post (which is why I suspect hardware) :
Scenario 1 :
Say system is off. Monitor is off. Turn computer on. Then after that I turn monitor on. The monitor led goes on and it appears like the display will come up; however, it then goes blank a second or two later. Led goes orange (indicating no video or computer off). Then blue - but no display. If I reboot it it'll then come up.
Scenario 2 :
If I go away from computer I always turn monitor off to save power. However, if I'm gone for say 30+ minute (guessing but that's when I usually notice it), I have a very similar problem to the first one. Video comes up for <= 1 second. Then, goes off but the led is blue (indicating there should be video, only.. black screen). I move the mouse and hit keys to make sure it's not, say, a power management issue. I then turn off monitor and back on while moving mouse. Comes on for same duration (<= 1 s).. and I repeat this and eventually it comes back on and stays on - that is, until I go afk again for example.
Things I've noticed in sys log :
Dec 26 08:40:35 triangle kernel: [27530.348552] [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 189
Dec 26 08:40:35 triangle kernel: [27530.348568] [drm:drm_edid_block_valid] *ERROR* Raw EDID:
another day it was similar :
Dec 22 16:02:14 triangle kernel: [55708.920331] [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 148
Dec 22 16:02:14 triangle kernel: [55708.920338] [drm:drm_edid_block_valid] *ERROR* Raw EDID:
(no, I don't use windows. and yes, I have the drivers and everything set up as it should be... only started recently).
Other notes :
I've disabled power management. Same issues.
I've put video card in a different slot. Made sure cables were attached.
One thing I did not try :
a different pci-e cable (If I have a spare; it's a modular psu).
As for psu - 850w, thermaltake. Not a year old if I recall and certainly not much longer if that.
One other thought is the option to invoke video post on (s3 ? one of the sleep modes anyway) resume. Still, it happens during post of the system itself, so I don't know.
Anyone have any thoughts on which it could be ? Video card or monitor ? Something else ?
Nearly forgot. video card specs - geforce 8800 gts 640 oc edition; temp at this moment is 51C.
Montior : 22" viewsonic (think the model is in the vg line an is a bit old, older than the video card).
Any thoughts would be appreciated.
Thanks.
Two scenarios. First one is during post (which is why I suspect hardware) :
Scenario 1 :
Say system is off. Monitor is off. Turn computer on. Then after that I turn monitor on. The monitor led goes on and it appears like the display will come up; however, it then goes blank a second or two later. Led goes orange (indicating no video or computer off). Then blue - but no display. If I reboot it it'll then come up.
Scenario 2 :
If I go away from computer I always turn monitor off to save power. However, if I'm gone for say 30+ minute (guessing but that's when I usually notice it), I have a very similar problem to the first one. Video comes up for <= 1 second. Then, goes off but the led is blue (indicating there should be video, only.. black screen). I move the mouse and hit keys to make sure it's not, say, a power management issue. I then turn off monitor and back on while moving mouse. Comes on for same duration (<= 1 s).. and I repeat this and eventually it comes back on and stays on - that is, until I go afk again for example.
Things I've noticed in sys log :
Dec 26 08:40:35 triangle kernel: [27530.348552] [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 189
Dec 26 08:40:35 triangle kernel: [27530.348568] [drm:drm_edid_block_valid] *ERROR* Raw EDID:
another day it was similar :
Dec 22 16:02:14 triangle kernel: [55708.920331] [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 148
Dec 22 16:02:14 triangle kernel: [55708.920338] [drm:drm_edid_block_valid] *ERROR* Raw EDID:
(no, I don't use windows. and yes, I have the drivers and everything set up as it should be... only started recently).
Other notes :
I've disabled power management. Same issues.
I've put video card in a different slot. Made sure cables were attached.
One thing I did not try :
a different pci-e cable (If I have a spare; it's a modular psu).
As for psu - 850w, thermaltake. Not a year old if I recall and certainly not much longer if that.
One other thought is the option to invoke video post on (s3 ? one of the sleep modes anyway) resume. Still, it happens during post of the system itself, so I don't know.
Anyone have any thoughts on which it could be ? Video card or monitor ? Something else ?
Nearly forgot. video card specs - geforce 8800 gts 640 oc edition; temp at this moment is 51C.
Montior : 22" viewsonic (think the model is in the vg line an is a bit old, older than the video card).
Any thoughts would be appreciated.
Thanks.