Heavy display corruption with Intrepid during installation

[Thom Hurks]

I downloaded the daily live CD for Intrepid on september the 18th. During the installation heavy display corruption could be noticed, however. Besides the default skin being wrong during the install (known bug), green/yellow ish lines were shooting up and down the screen. The install itself also took very long to complete, basic actions like clicking "next" after choosing your keyboard layout took very long to compute.

Especially some changes to my partitions, namely a resize of my Ext3 partition from 20GB to 10GB and a subsequent format, took very very long. I was about to take a picture of the dialog remaining at 0% for half an hour when it shot up to 50% exactly when I took the picture. The picture is attached, though the "shooting lines" do not seem visible on it.

After I managed to get the installation wizard finished and the final installation began, the entire screen became scrambled after about 10 minutes. It looked like the entire background of the screen was shooting up and down at insane speeds. The install dialog itself vanished as well. I also took a picture of this event, the corruption is clear.

Since the install was either taking ages or stopped completely, I rebooted my PC. The boot loader was corrupted and I had to fix it manually.

My laptop is a HP Compaq6715b, with an Ati X1250 IGP and AMD Turion X2 processor.
Note that Dapper, Edgy, Feisty and Hardy installed flawlessly before on my laptop before.
[lspci]
01:05.0 VGA compatible controller [0300]: ATI Technologies Inc RS690M [Radeon X1200 Series] [1002:791f]
     Subsystem: Hewlett-Packard Company Device [103c:30c2]

[Wouter Stomp (wouterstomp-deactivatedaccount)]

Is it possible to run the livecd normally, without installing?

[Thom Hurks (thomhurks)]

I will check that today hopefully, also with the latest Intrepid version.

[Thom Hurks (thomhurks)]

Tested again today with the live-cd from the 28th. This time the installation was less sluggish, though selecting my country still took about 5 minutes. Perhaps it's not wise to fit every major city in the world in an incredibly slow rendering drop-down box? Also, the drop-down box has heavy "ghosting" of the city names while you scroll in it, quite annoying. I'll attach a picture of that. Anyway, the editing of my partitions went more smoothly this time. Also, the correct skin was applied to the installation UI. I was also happy to see that there was no graphical corruption to speak of. No "shooting lines" and no complete corruption during the file copying process.

However, after the installation finished and I rebooted my pc, the corruption was there yet again. I can't enter my new Intrepid install because of the corruption. I'll add an attachment, though the corruption looks the same as it did on corruption.jpg

I also tried the live session, this worked without graphical corruption, though the session itself was quite slow. I also have Suse and Knoppix live-cds and those are much faster.

[Bryce Harrington (bryce)]

Sort of sounds like a bad modeline. If this is the case, one thing to try is to change resolutions to something different. Another thing to try would be to test it with an external monitor.

Please attach your /var/log/Xorg.0.log and the output of lspci -vvnn.

[Steve Beattie (sbeattie)]

This bug was reported in the Intrepid development cycle; removing regression-potential and marking as regression-release.

[Bryce Harrington (bryce)]

Thom, does it work if you run at some different resolution?

[Bryce Harrington (bryce)]

We're closing this bug since it is has been some time with no response from the original reporter. However, if the issue still exists please feel free to reopen with the requested information. Also, if you could, please test against the latest development version of Ubuntu, since this confirms the bug is one we may be able to pass upstream for help.