[Lubuntu] Some PC's or LTSP clients stall during boot at a blank, black screen

[John Hupp]

Thanks for having a look at this.

1. On this machine, /etc/X11/xorg.conf does not exist.

2. I installed linux-firmware-nonfree and re-tested all the non-working 
cards with no change in results.

3. Since I'm testing a variety of hardware, I didn't have much idea 
about what to uninstall.  But after doing some searching on how to 
uninstall video driver packages, I encountered these Ubuntu support pages:

https://help.ubuntu.com/community/Video(just an overview without any 
specific info of interest, except that it points to the next article)

https://help.ubuntu.com/community/BinaryDriverHowto
I didn't detail this fact in this thread, but for the cards that stall 
at a blank, black screen during a normal boot, I can configure LTSP to 
just boot to a shell (successfully) rather than to trying to load ldm, 
which results in the stalled boot.  From the sell I can use the commands 
mentioned in the article:
     lspci | grep VGA
     sudo lshw -C video
I can get Lubuntu's identification of the current card and find out if 
it is supposed to be supported (from the next link).

https://wiki.ubuntu.com/HardwareSupportComponentsVideoCards
Although who knows if that supported-cards info will be current.  I 
thought I read somewhere about some distros that newer libraries were 
causing more regressions for older video hardware.

On 12/7/2012 9:13 PM, Ioannis Vranos wrote:
> Try each of the following:
>
> 1. Erase /etc/X11/xorg.conf, and reboot.
>
> If the above does not work,
>
>
> 2. Install linux-firmware-nonfree package, and reboot.
>
> If the above does not work,
>
>
> 3. Uninstall all the video driver packages you do not need, leave only
> the one(s) that you need, and reboot.
>
>
> On Sat, Dec 8, 2012 at 12:53 AM, John Hupp <lubuntu at prpcompany.com> wrote:
>> An expanded list of what works and doesn't work for me (not double-tested,
>> and where not specified I'm listing chips rather than card mfr/model):
>>
>> Worked:
>> - PCI Matrox Millennium II MGA 2164W (PCI card)
>> - Intel 82810E (integrated)
>> - An ATI-based AGP card sold as a MIC E-G012-02-1214(B)
>> - ATI Rage 128 Pro (AGP card)
>> - ATI Rage 128 (AGP card)
>> - HP VectaVL PC w/ integrated video, probably either:
>>          Matrox G250 2X AGP
>>          Matrox Millennium G400 4X AGP
>>
>> Partially Worked (got past the blank, black screen but then failed somehow):
>> - Diamond STL III S540 XTRM32M 82 (AGP card)
>> - Diamond Spdstr A50 with SiS 6326AGP chip (AGP card)
>>
>> Failed:
>> - Trident 3DImage 9850 (AGP card)
>> - S3 Trio64V+ (PCI card)
>> - Diamond Viper with Power Weitek 9000/9001 and Oak Technology T9351 chips
>> (PCI card)
>> - ATI Mach64 (PCI card)
>> - eMachines eTower 500i w/ integrated video, probably:
>>          ATI Rage Pro Turbo 2X AGP
>

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