issues with 82845G Graphics Controller
Hi,
I have installed the latest debian on a dell optiplex gx260 which has a 82845G chipset and there are some strange problems. The system is configured with autologon as a standard user. Sometimes, after logging on, the screen goes black but if I connect to it with vnc, I get a working desktop. Yesterday I booted it without a display attached to it and now I cannot set it to the right screen resolution anymore (1440 x 900) which was working fine before. I have googled and searh the forum but cannot find the right information. According to Intel, the latest driver should be in the distro but I cannot find any details about that (version/date). grep Driver /etc/X11/xorg.conf returns Code:
Driver "kbd" Code:
00:02.0 VGA compatible controller: Intel Corporation 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device (rev 01) Code:
Screen 0: minimum 320 x 200, current 1280 x 800, maximum 1280 x 1280 Peter |
The contents of Xorg.0.log will give you some information about what is happening on startup.
I didn't expect that your /etc/X11/xorg.conf would have anything in it on a clean install. You could try renaming it (so you can reinstate it if you need to), and create an xorg.conf that is empty. On Debian Lenny, an empty xorg.conf is the default; the content means that some later configuration changes have been made. |
Hi neonsignal, thank you for your reply!
Attaching Xorg.0.log doesn't work due to an 'invalid file' error... :( (pasting here is also a no go since the file has 600 lines of text) I just copied & deleted the original xorg.conf, rebooted but no difference. |
Now I get a 'failed to start x server' error... :banghead:
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Quote:
If they behaviour continues to vary even though you haven't made any changes, it may indicate a hard drive (or memory issue), rather than some particular problem with the X setup. In order to attach Xorg.0.log to a forum post, I think you would have to rename it to 'Xorg.txt'. |
# 5
Quote:
Other threads about Dell GX 260 : Intel Graphics issues .. http://www.linuxquestions.org/questi...-gx260-771584/ .. and .. http://www.linuxquestions.org/questi...-gx260-769120/ .. where two examples, xorg.conf are attached. ..... |
1 Attachment(s)
Ok, it was indeed a matter of extension that kept me from uploading the logfile so now it's enclosed.
Does it show somewhere if this problem is related to a bad HD/memory - even though I don't think that this is a problem since the system has worked flawlessly before. No, I didn't recreate xorg.conf and it seems that knudfl is right because after that error message I rebooted and got it working again. Recreating it leaves it empty anyway. Is it normal that before I was able to choose 1440x900 and now I'm not? |
It does happen that X sometimes doesn't detect all the possible resolutions (some devices do not quite follow the standard). The automatically detected settings can be overridden by setting up xorg.conf, but I just wanted to be sure that you could at least get X starting reliably without it.
If X is starting consistently, ignore my suggestion about other devices failing. If you have a look in your /etc/X11 directory, you may find older versions of xorg.conf with some working settings. The relevant sections are the Monitor section (particularly HorizSync and VertRefresh), and the Screen section (particularly the Display resolutions). I'm don't know what changed your xorg.conf in the first place. |
Well, X starts most of the times but I wouldn't call it reliable since sometimes the screen just goes black.
On the other hand, if having autologon enabled I can see through vnc that the system works. Is it normal that before logging on (autologon disabled) there are different display settings compared to being logged in? I noticed that the image is not at the same place -> refresh rate? There are no older version of xorg.conf and the one I've created remains empty. Code:
ls -l /etc/X11/ |
Quote:
Quote:
Quote:
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Ok I used the puppylinux configuration and I can now select other resolutions as well.
Should I just go ahead and see what it brings? The only thing is that my mouse is not functioning but with vnc it is, how is this possible? |
If the xorg.conf you tried is working, then go with it.
Some of it is not relevant to your system, but you can always edit it if you need to, as you learn what different parts of it mean. 'man xorg.conf' will give you a description, but there is a fair bit to read through. Quote:
You can have a fairly minimal mouse setup in xorg.conf, and the system will (hopefully) work out the rest, eg Code:
Section "InputDevice" |
1 Attachment(s)
:( at first it was working, I selected 1440x900 as resolotion, rebooted and the image was darker then it should be. Rebooted once again and got a 'failed to start x server' error again - see the enclosed logfile.
Rebooting again bypasses the error again... Ok, thanks A LOT for helping out! Gotta go to bed now since it's 4:37 a.m. over here! |
Another couple of things to try (it might be a problem with the intel driver).
In xorg.conf, try replacing this line: Code:
Driver "intel" Code:
Driver "i810" Code:
Option "NoAccel" |
Thanks for your tips: I just changed those settings in my xorg.conf file and it's a big improvement!
I also activated the no acceleration option immediately since the system doesn't need any 3-D related stuff. Rebooted the system about 20 times and now it's a lot more consistent. There is one issue though: the colors are still not what they should be. I tried to change the refresh rates in the monitor section according to the display connected but that didn't go well. |
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