Re: [Tails-testers] [maybe related to #11057]Re: Bug report:…

intrigeri wrote:
> alienpup:
> >> Dear 32r1@???: please send our help desk a bug report from the same machine, but on Tails 3.1, so we can compare :)
>
> > Done.
>
> Thanks.
>
> > A new discovery suggests this is an Intel graphics
> > driver/hardware issue.
>
> Yes. Anyone affected by backlight issues in Tails 3.2~rc1, please try
> adding acpi_backlight=vendor to the boot options and report back.
> Thanks!


> > Tails 3.2
> > rc~1 fails to boot this laptop in Troubleshooting Mode. Boot progresses normally
> > until screen begins flashing at about a 2Hz rate and scrolls repeated error message:
>
> > [timestamp] intel ips 0000:00:1f.6: failed to disable graphics turbo
>
> > Repeats forever, only timestamp changes.
>
> > Pressing Ctl+Alt+Del interrups but leaves system hanging with a blank, backlighted screen. Hard power off required.
>
> OK. Too bad, but sometimes Troubleshooting mode actually *breaks* stuff.
>
> Cheers,
> --
> intrigeri


Subject hardware: Lenovo Thinkpad T410, Intel i5 4GB

Adding this to "normal" boot options corrects the maximum brightness problem, *but* disables keyboard display brightness adjustment. The display comes up at what appears to be the nominal brightness.

Adding this to "Troubleshooting" boot options appears to have no effect. The boot process eventually stalls with the flashing screen and repeating Intel related error message (above).

alienpup