On Mon, Nov 10, 2008 at 08:13:52PM -0500, Mackenzie Morgan wrote: > On Mon, 2008-11-10 at 17:05 -0800, Bryce Harrington wrote: > > > However, I am beginning to think that all the cases I know are i945 - > > > execpt for the aforementioned old laptop about which - frankly - I don't > > > care at all :) So perhaps "my" bug will solve most of the other ones > > > regarding VGA out. > > > > Possibly. VGA out issues tend to be extremely HW-specific. I could > > believe there could be a VGA out issue affecting just 945 chips. That > > said, I haven't seen the issue on the spare 945 laptop I have on hand. > > The issue doesn't affect all 945 chips. Mine isn't affected. There are > multiple different chips in existence labeled 945, however. From > drivers/gpu/drm/i915/i915_drv.h: > 945G: 2772 > 945GM: 27A2 > 945GM: 27AE
Yes, this is quite likely. And indeed, quite often they're unique not only to the chip PCI ID, but also the subsystem vendor PCI ID. In other words, the chip itself may be fine, but the issue came into being when the chip was integrated onto the motherboard and wired to the VGA port. The subsystem vendor PCI ID can be found in the 'lspci -vvnn' output, as the second line after the VGA device PCI line. > Maybe only one of these three is affected? > > I do have to wonder if it is more likely to affect upgrades than clean > installs, as well. Certainly it's possible, if the user had stray configuration in their xorg.conf. But usually users doublecheck that stuff before they file a bug report, so most VGA issues I've dealt with have been legitimate video driver issues. Bryce -- Ubuntu-devel-discuss mailing list Ubuntu-devel-discuss@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-devel-discuss
