Release notes for 12.10 - some known problems with video drivers

[Aere Greenway]

Yorvyk:

I just tried the Lubuntu 12.10 Live-CD on my spouse's machine (a Dell
Optiplex 270, which uses the 
Intel 865G chipset), and it worked with no apparent problems.  

- Aere


On Tue, 2012-10-16 at 15:50 -0600, Aere Greenway wrote:

> On Tue, 2012-10-16 at 22:09 +0100, Yorvyk wrote: 
> 
> > On 16/10/12 20:25, Aere Greenway wrote:
> > > On Tue, 2012-10-16 at 11:42 +0100, Yorvyk wrote:
> > >> Some of the legacy video drivers are currently non-functional and
> > >> aren't likely to be resolved any time soon. If at all.
> > >>
> > >>
> > >> Trident Cyberblade - xserver-xorg-video-trident
> > >>
> > >> This driver has a whole array of problems.
> > >> https://bugs.launchpad.net/bugs/+bugs?field.searchtext=trident&search=Search+Bug+Reports&field.scope=all&field.scope.target=
> > >>
> > >>
> > >>
> > >>
> > As the VESA driver doesn't work with this chip set the only solution is
> > >> to remain with 12.04.
> > >>
> > >>
> > >> Intel i810 - xserver-xorg-video-intel
> > >>
> > >> This driver currently segfaults on this chipset.
> > >> https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1060492
> > >>
> > >>
> > >>
> > >>
> > SiS M650/650 - xserver-xorg-video-sis
> > >>
> > >>
> > >> This driver currently loops around the login screen for the M650 or
> > >> produces a blank screen 650.
> > >> https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-sis/+bug/1034812
> > >>
> > >>
> > >>
> > >>
> > >>
> > Workarounds
> > >>
> > >> Before upgrade from 12.04 blacklist or delete the video driver and
> > >> use Xorg.conf or RandR to set the correct resolution etc. if
> > >> necessary.
> > >>
> > >> A new install can only be accomplished from the alternate ISO.  On
> > >>  reboot go to Recovery Mode and delete/blacklist video driver.  On
> > >> reboot create suitable xorg.conf or use RandR to get correct
> > >> resolution if necessary.
> > >>
> > >> There may be problems with other legacy video chips for which the
> > >> blacklist/delete workaround may well work.
> > >>
> > >>
> > >>
> > >>
> > > Yorvyk:
> > >
> > > In looking more carefully at your e-mail, I noticed a work-around,
> > > which is good.
> > >
> > As I say the workaround does work but, depending on the monitor, can
> > result in an unsuitable screen resolution.  So you'll have to brush up
> > on your xorg.conf or RandR settings :/
> > 
> > 
> > > I have a few more questions though.
> > >
> > > In the "Intel i810 - xserver-xorg-video-intel" case, is that only
> > > for the i810 chipset, or is it for Intell graphics in general?  If
> > > only the i810 chipset has the problem, my primary machine should be
> > > okay, because it uses the i865 chipset.
> > >
> > I've tried an i865 and the results have been rather erratic.  I'm not
> > convinced about the PSU in that machine though, so I'm reluctant to say
> > what the results are. I've only seen the problem on i810 and not seen
> > any reports for other chip sets so I don't know.  It may work on some 
> > i810 based boards as this chip set was always a bit problematic with 
> > different manufactures wiring it up in
> > different ways.
> > 
> > 
> > > Perhaps the quickest way to determine this, is download the
> > > daily-build CD image, and try it out.  I assume if it has the
> > > problem on my machine, the live-CD will not run successfully with the
> > > intel graphics on my machine.
> > >
> > All my tests have shown the problem is reproducible with the live-CD and
> > that the alternate ISO will install but on reboot will fail with the 
> > segfault problem. So you'll have to reboot to recovery mode.  See my 
> > post 'Recovery Mode Failure' to see the workaround for that problem.
> > Looks like anybody with video problems is going to have fun with this 
> > upgrade and is going to have to put in a bit of work to get things working.
> > 
> > 
> > 
> > 
> 
> Yorvyk:
> 
> Thank you very much for the additional information.  
> 
> Your initial e-mail on this problem had me worried, but it spurred me
> to action (to do some testing of 12.10).  
> 
> I downloaded the current Lubuntu 12.10 build, and tried it in all 7
> machines in my test-bed.  My test-bed includes a 450-megahertz
> HP-Vectra, and a Compac P933 (933 megahertz).  
> 
> It worked on all of them - including my primary machine (which depends
> on the Intel graphics) that I was worried about.  
> 
> Two of the machines depend on the xserver-xorg-video-intel package,
> and both of them worked with no problems.  These two machines use the
> following chipsets:  
> 
> Dell™ Dimension™ 1100, chipset= Intel 865 GV
> 
> Dell™ Dimension™ 8200, chipset= Intel 850 or 850E
> 
> The two other Dell machines use a Nvidia card for graphics, so I don't
> know if their internal Intel graphics would have had a problem.  
> 
> Anyway, I do appreciate that you alerted me to a big potential
> problem, and relieved that it turned out not to be a problem.  
> 
> The other machines tried were an Acer Aspire laptop, a Dell Optiplex
> 260, a Dell Optiplex 240, an HP Vectra 450 mHz, a Compaq P933.  
> 
> The live CD worked on all of them.  I am very much relieved!  
> 
> The only problem I encountered was that when I tried to run the system
> profiler/benchmark tool, it presented 3 successive empty dialog boxes,
> which I had to dismiss, not knowing what they were attempting to alert
> me about.  This happened on all of the machines.  
> 
> 
> 
> 

-- 

Sincerely,
Aere
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