I can not use my monitor's native resolution

[Adam Petaccia]

I have an Acer AL1917W flat panel monitor. It's native resolution is 1440x900@75Hz. Ubuntu refused to believe that. The LiveCD did not recognize this and stuck me at 1152x864. After installing I switched immediately to the nVidia driver, which capped me at 1024x768. Neither option gave me the ability to refresh at at least 60Hz (around the 50s).

[atrus123 (atrus123)]

In this case, it might be helpful to have a look at your xorg.conf (/etc/X11/xorg.conf) and your Xorg.0.log (/var/log/Xorg.0.log).

[Adam Petaccia (mighmos)]

Sorry, I should have mentioned this is after a fresh install, with nVidia driver installed.

[Adam Petaccia (mighmos)]

Attached is Xorg.0.log with 1440x900 stuck in front of the other resolutions.

After trying a variety of solutions (including calculating modelines) and nothing working, I removed my xorg.conf file. This allowed the system to correctly pick up the resolution, and for the first time since I've had this monitor, the correct refresh rate.

I don't know if I should leave this bug open or not because I shouldn't have to do all that.

[Adam Petaccia (mighmos)]

Sorry for spamming with updates. I think I've stumbled upon two bugs: one dealing with Ubuntu _detecting_ my monitor (the nv) driver. If I use the nv driver (or just zap my config file) 1440x900 works fine once I add it in there. So this bug just means that Ubuntu didn't recognize my monitor, but once I tell it what it can do, Ubuntu works fine. So just a small detection issue there.

The other bug seems to be with nVidia's binary driver which misdetects my monitor, and refuses to run at 1440x900. I'll be looking for what I can do there.

So long story short: this bug is about Ubuntu just not correctly setting up my monitor, once I edit xorg.conf, it works fine.

[Sitsofe Wheeler (sitsofe)]

Thank you for your bug report.

Adam:
All the logs are for the binary driver. Since a bug report can only focus on one issue did you want to make this bug focus on the nvidia binary driver issue?

Setting to needsinfo pending reply from Adam.

[Bryce Harrington (bryce)]

Thanks for the bug report. Ubuntu failing to detect monitors is a known issue, and one with very high priority to fix. I'm marking this one a dupe of that issue. Feel free to add more info to this report; I'll doublecheck it again if/when bug 49827 is figured out.

[Launchpad Janitor (janitor)]

[Expired for xorg-server (Ubuntu) because there has been no activity for 60 days.]