Re: Mini DisplayPort not quite working with latest Kernel

[Frederic Muller]

On 09/14/2016 09:56 AM, Frederic Muller wrote:
> Hi!
>
> I use a X1 Carbon 3rd gen and since the latest kernel update (maybe a
> week ago) the Mini DisplayPort does not work when connected at startup.
> Sometimes I can indeed connected my external monitor once I log in and
> it works, sometimes I have to boot with the previous kernel. I haven't
> troubleshooted much but was wondering if it was just me, or other were
> seeing the same behavior.
>
> Thanks.
>
> Fred

Hi!

Not sure whether my post made it to the list. Got a new kernel yesterday
and same problem occurs. Any hint?

Thanks

Fred

Mini DisplayPort not quite working with latest Kernel

[Patrick O'Callaghan]

On Thu, 2016-09-15 at 10:08 +0700, Frederic Muller wrote:
> Not sure whether my post made it to the list.

You can always check the list archives. See the URLs at the end of
every post.

poc

Mini DisplayPort not quite working with latest Kernel

[Roger Wells]

On 09/14/2016 11:08 PM, Frederic Muller wrote:
> On 09/14/2016 09:56 AM, Frederic Muller wrote:
> > Hi!
> >
> > I use a X1 Carbon 3rd gen and since the latest kernel update (maybe a
> > week ago) the Mini DisplayPort does not work when connected at startup.
> > Sometimes I can indeed connected my external monitor once I log in and
> > it works, sometimes I have to boot with the previous kernel. I haven't
> > troubleshooted much but was wondering if it was just me, or other were
> > seeing the same behavior.
> >
> > Thanks.
> >
> > Fred
>
> Hi!
>
> Not sure whether my post made it to the list. Got a new kernel yesterday
> and same problem occurs. Any hint?

No.
I have a Thinkpad X240 with a Mini Display Port. The external monitor is
recognized reliably whether it is plugged in at boot time or plugged in
after the pc is up and running.

OS:
uname -a
Linux rwells-x240 4.7.2-201.fc24.x86_64 #1 SMP Fri Aug 26 15:58:40 UTC
2016 x86_64 x86_64 x86_64 GNU/Linux
HTH
> Thanks
> Fred
>
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Mini DisplayPort not quite working with latest Kernel

[Mark Haney]

I've had this problem, possibly in a slightly different manner, with F23/24
and KDE.  My problem might be a bit different since I have a dongle
connected to my Mini-DP port that splits to two HDMI outs since I have two
large external monitors.  I have a VGA port on mine, but that port doesn't
support the 1900x1200 resolution these monitors have.

My problem is after a reboot, the Xorg config gets all jacked up I end up
having to pull the mini-DP cable from the port, let the display reset to
the laptop display, then re-connect the port.  Most of the time that resets
all the displays so I can use them.  That may be more KDE related, but it's
annoying as hell.

On Wed, Sep 14, 2016 at 11:08 PM, Frederic Muller  wrote:
> On 09/14/2016 09:56 AM, Frederic Muller wrote:
> > Hi!
> >
> > I use a X1 Carbon 3rd gen and since the latest kernel update (maybe a
> > week ago) the Mini DisplayPort does not work when connected at startup.
> > Sometimes I can indeed connected my external monitor once I log in and
> > it works, sometimes I have to boot with the previous kernel. I haven't
> > troubleshooted much but was wondering if it was just me, or other were
> > seeing the same behavior.
> >
> > Thanks.
> >
> > Fred
>
> Hi!
>
> Not sure whether my post made it to the list. Got a new kernel yesterday
> and same problem occurs. Any hint?
>
> Thanks
> Fred
>
> users mailing list
> [e-mail]
> To unsubscribe or change subscription options:
> https://lists.fedoraproject.org/admin/lists/[e-mail]
> Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
> Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
> Have a question? Ask away: http://ask.fedoraproject.org