Target Display Mode in Fedora
Is there a way to get in touch with their engineers, or someone who'd know who to talk to? I did try the intel-gfx list, and one person in particular who I was encouraged to contact, but haven't heard back from either. Thanks Message: 1 Date: Tue, 15 Oct 2013 04:15:00 -0400 (EDT) From: David Airlie airl...@redhat.com To: Development discussions related to Fedora devel@lists.fedoraproject.org Subject: Re: Target Display Mode in Fedora Message-ID: 352492266.2282276.138182495.javamail.r...@redhat.com Content-Type: text/plain; charset=utf-8 The iMac and HP Z1 have a bi-directional DisplayPort/Thunderbolt port, which lets them be used as a Display for another computer. Apple calls it Target Display Mode, though HP doesn't seem to have a special name for it. This is really quite useful, I've used an iMac hooked up to a Linux machine at a previous job, and it's awesome to switch between the two machines when you've only got space for one display on the desk. The feature is invoked by a fairly non-standard keyboard combination. Here is a video illustrating what I mean ( http://www.youtube.com/watch?feature=player_detailpagev=Y7_OZgBX8kQ#t=60 ), note how he switches the iMac from being the display for the MacBook to being an iMac again via keyboard shortcut (sort of off-screen). However, this feature is only implemented in OS X and Windows (via HP's My Display application) on the iMac and Z1 respectively. Which means that if, for example, a Z1 has Linux as the primary OS, the Z1 cannot currently be used as a monitor for a laptop or another computer (via Target Display Mode). As far as I've been able to discover, Target Display Mode does not exist under any flavor of Linux. What would it take to support this in Fedora? Is this a Desktop-centric feature for Gnome/KDE/Cinnamon, or is this something that would/should be part of the Linux kernel itself? I don't think it's directly part of a graphics driver (at least on Windows, since HP released My Display as a separate program), but again I'm not sure. You'd have to reverse engineer or ask HP/Apple what they actually do for this to work. then implement that. Dave. -- devel mailing list devel@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
Re: Target Display Mode in Fedora
Forgot to add, thanks to everyone who's chimed in on this! On Thu, Oct 17, 2013 at 11:30 AM, Chris Rydalch cryda...@gmail.com wrote: Is there a way to get in touch with their engineers, or someone who'd know who to talk to? I did try the intel-gfx list, and one person in particular who I was encouraged to contact, but haven't heard back from either. Thanks Message: 1 Date: Tue, 15 Oct 2013 04:15:00 -0400 (EDT) From: David Airlie airl...@redhat.com To: Development discussions related to Fedora devel@lists.fedoraproject.org Subject: Re: Target Display Mode in Fedora Message-ID: 352492266.2282276.138182495.javamail.r...@redhat.com Content-Type: text/plain; charset=utf-8 The iMac and HP Z1 have a bi-directional DisplayPort/Thunderbolt port, which lets them be used as a Display for another computer. Apple calls it Target Display Mode, though HP doesn't seem to have a special name for it. This is really quite useful, I've used an iMac hooked up to a Linux machine at a previous job, and it's awesome to switch between the two machines when you've only got space for one display on the desk. The feature is invoked by a fairly non-standard keyboard combination. Here is a video illustrating what I mean ( http://www.youtube.com/watch?feature=player_detailpagev=Y7_OZgBX8kQ#t=60 ), note how he switches the iMac from being the display for the MacBook to being an iMac again via keyboard shortcut (sort of off-screen). However, this feature is only implemented in OS X and Windows (via HP's My Display application) on the iMac and Z1 respectively. Which means that if, for example, a Z1 has Linux as the primary OS, the Z1 cannot currently be used as a monitor for a laptop or another computer (via Target Display Mode). As far as I've been able to discover, Target Display Mode does not exist under any flavor of Linux. What would it take to support this in Fedora? Is this a Desktop-centric feature for Gnome/KDE/Cinnamon, or is this something that would/should be part of the Linux kernel itself? I don't think it's directly part of a graphics driver (at least on Windows, since HP released My Display as a separate program), but again I'm not sure. You'd have to reverse engineer or ask HP/Apple what they actually do for this to work. then implement that. Dave. -- devel mailing list devel@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
Target Display Mode in Fedora
The iMac and HP Z1 have a bi-directional DisplayPort/Thunderbolt port, which lets them be used as a Display for another computer. Apple calls it Target Display Mode, though HP doesn't seem to have a special name for it. This is really quite useful, I've used an iMac hooked up to a Linux machine at a previous job, and it's awesome to switch between the two machines when you've only got space for one display on the desk. The feature is invoked by a fairly non-standard keyboard combination. Here is a video illustrating what I mean (http://www.youtube.com/watch?feature=player_detailpagev=Y7_OZgBX8kQ#t=60), note how he switches the iMac from being the display for the MacBook to being an iMac again via keyboard shortcut (sort of off-screen). However, this feature is only implemented in OS X and Windows (via HP's My Display application) on the iMac and Z1 respectively. Which means that if, for example, a Z1 has Linux as the primary OS, the Z1 cannot currently be used as a monitor for a laptop or another computer (via Target Display Mode). As far as I've been able to discover, Target Display Mode does not exist under any flavor of Linux. What would it take to support this in Fedora? Is this a Desktop-centric feature for Gnome/KDE/Cinnamon, or is this something that would/should be part of the Linux kernel itself? I don't think it's directly part of a graphics driver (at least on Windows, since HP released My Display as a separate program), but again I'm not sure. I'd love to have Target Display Mode, but before submitting a feature requesting, I wanted to better understand the implications - and see if perhaps I'd missed something. If it can/should be done as a stand-alone program, that'd be great to know too. Thanks! Chris-- devel mailing list devel@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
Re: Target Display Mode in Fedora
The iMac and HP Z1 have a bi-directional DisplayPort/Thunderbolt port, which lets them be used as a Display for another computer. Apple calls it Target Display Mode, though HP doesn't seem to have a special name for it. This is really quite useful, I've used an iMac hooked up to a Linux machine at a previous job, and it's awesome to switch between the two machines when you've only got space for one display on the desk. The feature is invoked by a fairly non-standard keyboard combination. Here is a video illustrating what I mean ( http://www.youtube.com/watch?feature=player_detailpagev=Y7_OZgBX8kQ#t=60 ), note how he switches the iMac from being the display for the MacBook to being an iMac again via keyboard shortcut (sort of off-screen). However, this feature is only implemented in OS X and Windows (via HP's My Display application) on the iMac and Z1 respectively. Which means that if, for example, a Z1 has Linux as the primary OS, the Z1 cannot currently be used as a monitor for a laptop or another computer (via Target Display Mode). As far as I've been able to discover, Target Display Mode does not exist under any flavor of Linux. What would it take to support this in Fedora? Is this a Desktop-centric feature for Gnome/KDE/Cinnamon, or is this something that would/should be part of the Linux kernel itself? I don't think it's directly part of a graphics driver (at least on Windows, since HP released My Display as a separate program), but again I'm not sure. You'd have to reverse engineer or ask HP/Apple what they actually do for this to work. then implement that. Dave. -- devel mailing list devel@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
Re: Target Display Mode in Fedora
On Oct 15, 2013, at 2:15 AM, David Airlie airl...@redhat.com wrote: The iMac and HP Z1 have a bi-directional DisplayPort/Thunderbolt port, which lets them be used as a Display for another computer. Apple calls it Target Display Mode, though HP doesn't seem to have a special name for it. This is really quite useful, I've used an iMac hooked up to a Linux machine at a previous job, and it's awesome to switch between the two machines when you've only got space for one display on the desk. The feature is invoked by a fairly non-standard keyboard combination. Here is a video illustrating what I mean ( http://www.youtube.com/watch?feature=player_detailpagev=Y7_OZgBX8kQ#t=60 ), note how he switches the iMac from being the display for the MacBook to being an iMac again via keyboard shortcut (sort of off-screen). However, this feature is only implemented in OS X and Windows (via HP's My Display application) on the iMac and Z1 respectively. Which means that if, for example, a Z1 has Linux as the primary OS, the Z1 cannot currently be used as a monitor for a laptop or another computer (via Target Display Mode). As far as I've been able to discover, Target Display Mode does not exist under any flavor of Linux. What would it take to support this in Fedora? Is this a Desktop-centric feature for Gnome/KDE/Cinnamon, or is this something that would/should be part of the Linux kernel itself? I don't think it's directly part of a graphics driver (at least on Windows, since HP released My Display as a separate program), but again I'm not sure. You'd have to reverse engineer or ask HP/Apple what they actually do for this to work. then implement that. Or maybe Intel would be forthcoming. It's their hardware. Chris Murphy -- devel mailing list devel@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
Re: Target Display Mode in Fedora
On Tue, Oct 15, 2013 at 09:36:32AM -0600, Chris Murphy wrote: Or maybe Intel would be forthcoming. It's their hardware. Not in this case. Target display mode is a vendor extension, and switching it will be vendor specific. -- Matthew Garrett | mj...@srcf.ucam.org -- devel mailing list devel@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
Re: Target Display Mode in Fedora
On Oct 15, 2013, at 10:36 AM, Matthew Garrett mj...@srcf.ucam.org wrote: On Tue, Oct 15, 2013 at 09:36:32AM -0600, Chris Murphy wrote: Or maybe Intel would be forthcoming. It's their hardware. Not in this case. Target display mode is a vendor extension, and switching it will be vendor specific. Too bad. I wonder if this switching extension is being obfuscated from reverse engineering with these smart cables Apple's producing. Chris Murphy -- devel mailing list devel@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
Re: Target Display Mode in Fedora
On Tue, Oct 15, 2013 at 11:52:41AM -0600, Chris Murphy wrote: On Oct 15, 2013, at 10:36 AM, Matthew Garrett mj...@srcf.ucam.org wrote: On Tue, Oct 15, 2013 at 09:36:32AM -0600, Chris Murphy wrote: Or maybe Intel would be forthcoming. It's their hardware. Not in this case. Target display mode is a vendor extension, and switching it will be vendor specific. Too bad. I wonder if this switching extension is being obfuscated from reverse engineering with these smart cables Apple's producing. I can't see how. It works fine without any kind of special cable. -- Matthew Garrett | mj...@srcf.ucam.org -- devel mailing list devel@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
