[Bug 108462] two external screens permanently go blank on HP EliteBook Folio G1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108462

--- Comment #75 from Lakshmi <lakshminarayana.vudum at intel.com> ---
(In reply to Johannes Berg from comment #73)
> Actually, it got MUCH worse.
> 
> Not only do screens (all, including the internal) keep flickering/turning on
> and off with that kernel like before, but it also loses one of the external
> screens entirely.
> 
> What happens is that with this new kernel, going into gdm3 turns off both
> external displays. This does NOT happen with gdm3 with a different kernel,
> including rc1, there they are turned on (and keep flickering) in gdm3. When
> I log in, only one external display is turned on again.
> 
> Note that a similar behaviour happened before - if I were warm-rebooting the
> machine, only one external display would turn on after the reboot. A cold
> reboot turned on both external screens reliably. So the "can only turn on
> one of the two after two had been turned off" was already there, but what's
> new is that without any changes other than the kernel, gdm3 now turns off
> both external screens on the login screen.
> 
> Much worse, because now with this kernel I can only use one external screen
> at all (except during boot, well...)

Can you please attach the logs as you verified the issue on drmtip?

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