Fedora :: F12: LVDS Goes To White, External VGA?
Feb 5, 2010
I'm on a Dell notebook with Radeon Xpress 200M just upgraded from F11 to F12 and began to have white screen issues, immediately. At the beginning of boot screen went to white, hard drive activity but no control. Upon several retries and hooking up an external VGA, I managed to get display on both the external and LCD, i think in twin mode -- I then disconnected the VGA, and the LCD was OK ... until the next reboot: the LCD started going to white screen just before the GUI login, while the VGA remained viewable. Then, for no apparent reason, it would now and then go to white at the very beginning of the boot, then, again, just before the login. Also, looking at the external, it appeared that the system was thinking it had two displays working in extended desktop mode (cursor and windows would spill over to the left of the VGA screen)
"xrandr --output LVDS --mode 1280x800" caused both displays to go black momentarily, then each would come back to the state it was in -- VGA to viewable display, and the LVDS to white screen. Subsequent xrandr didn't appear to trigger anything.
tried "system-config-display", to no avail. Removing the "xorg.conf" doesn't help. Tried several reboots, including into text mode, nothing worked (it's bewildering that it worked the first time an external was hooked up, but not many subsequent times)Hooked up a different external, played around with settings, then another xrandr command did finally bring back the LVDS ! (whether the LVDS is a white screen or is working, xrandr reports it is connected.) I apologize for posting this question without exhausting all possible combinations and scenarios -- i've already lost three hours this morning (and troubleshooting with rebooting ultimately leads to forced file-system checks (long waits) for those of us with ext3 still). It is reasonable to predict that although the LVDS is working at the moment, the problem is not fixed, since it worked and then stopped working before.
Also, nothing like this ever happened with this machine before -- F9 through F11 (also, Windows Vista has normal display)
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Feb 17, 2011
My microphone was working properly until four days ago. I'm not sure if this appeared after a system update, I'm using LL 10.04. This is my onboard HDA Intel chip,from 'lspci':
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Code:
xrandr --output LVDS1 --off --output VGA1 --mode 1920x1080
Works fine, except: Virtual Terminals are at the native LVDS resolution 1024x600 meaning that they only use the upper left hand corner of the 1920x1080 monitor. Why? (Or maybe I should say that their resolution is right - the font is correct, not huge - but the VT is limited to 1024x600.)
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I am just trying to setup my debian 8.2 stable in my Intel(R) Atom(TM) CPU N2600 @ 1.60GHz. The installation goes smooth without any issues. For this system , we are planning to use DUAL display with HDMI & LVDS.
We see that that only HDMI is working and LVDS screen is blank. However, we notice that XRANDR is is showing LVDS as connected
XORG.log:http://pastebin.com/LX9HhRui
KernlogINfo:http://pastebin.com/U2E09iZk
lspci:http://pastebin.com/eBC8wLVu
xrandr:http://pastebin.com/bS5NmAnQ
dmidecode:http://pastebin.com/2qSsHE1s
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here is what is in my file:
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[URL[
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