I'm not very clear what was changed because I'm still running 4.2.5-300.fc23.x86_64 kernel that was shipped with Fedora but issue completely gone. As far as I'm concerned the problem is fixed with the exception the fix needs to be in the F23 distribution. But I switched to three monitors and the problem came back. I haven't tried that myself yet. navigate here
Comment 95 Marek Novotny 2016-01-13 07:16:17 EST I have noticed Fedora 23 provides update of kernel to 4.3.3. Completely updated system as of 2/7: xorg-x11-drv-intel-2.99.916-3.20141117.fc21.x86_64 kernel: 3.18.5-201.fc21.x86_64 The monitor configuration is the same as previously described: Lenovo T540p docked (with open lid), displayport, and DVI port. Comment 38 Marek Novotny 2015-05-27 04:28:01 EDT so after upgrading dock firmware, actually I had already the latest 2.17 firmware. But xrandr is not able to detect them as independent displays:Screen 0: minimum 320 x 200, current 4800 x 1620, maximum 32767 x 32767 eDP1 connected primary 2880x1620+0+0 (normal left inverted
Lenovo Ultra Dock Firmware
I'm on RHEL 7.0.2. - Right click on the desktop and select 'Change Background Image' (this is just a faster way to get into System Prefs) - Click the back arrow Now if I put to stand by and wakeup it works. Comment 20 Jeff Peeler 2015-02-09 15:50:20 EST It usually is the displayport monitor, but I think I've also seen the laptop and displayport powered on, with the final DVI monitor off.
seemed pretty stable with one external monitor so I thought I would try a 4K.
The problem with the workarounds, at least for me is that every time I "tickle" the display properties to make the monitor wake up Gnome Shell trashes my carefully laid out
Comment 46 Mark Shoger 2015-10-09 09:52:52 EDT I've got the same issue, Lenovo 540p and docking station.
We'll keep our fingers crossed, I think I need to run for another day or two to make sure the problem doesn't reappear, but so far so good, just wanted to
It won't work in the 4K mode.
Maybe try changing it in BIOS to only intel or only nvidia (on my T520 it's in Diplay settings).Some Ubuntu guys appear to have a similar issue: http://ubuntuforums.org/showthread.php?t=1913401Here's the guy who
I also just installed "intel-gpu-tools" and ran the "intel-virtual-output" command and I will update if there is any improvement. Due to the powering on problem, I've disabled any power saving modes so that the monitors always stay on. Both of them randomly fail to wake up. Thinkpad Pro Dock 3 Monitors From the OS point of view everything is working fine.
When I reach the lock screen, if only one monitor wakes up, I press ctrl-alt-f1, and then ctrl-alt-f2 and it usually fixes the issue until next time. Lenovo Thinkpad Docking Station Dual Monitor Setup Hello Just updated to 4.3.4-200.fc22.x86_64 Now when I use MATE Monitor Preferences GUI applet to wake the blank screens the laptop screen freezes for 4 to 5 seconds, and then the My setup: T440p i7 4700mq Geforce 730m Windows 8.1 I've installed the latest WHQL drivers from nvidia, latest intel chipset drivers via Lenovo update, and latest bios Any input would be https://support.lenovo.com/us/en/documents/pd029622 To use 2 displays you can either use:- 1x DP + 1x HDMI- 1x DP + 1x DVI- 1x DP + VGA- 1x HDMI or DVI + VGA _________________IBM ThinkPad R50e
Maybe try changing it in BIOS to only intel or only nvidia (on my T520 it's in Diplay settings).The T540p does not allow to disable the dedicated graphics in the BIOS. Lenovo Docking Station 3 Monitors Then move one of the monitors a tiny bit so I can click "Apply", and then just revert the changes when the troublesome monitor turns on. This page has been accessed 21,843 times. Comment 106 Stephen Wadeley 2016-02-04 05:51:47 EST (In reply to Stephen Wadeley from comment #50) > (In reply to Stefan Assmann from comment #49) > > Also experiencing this issue with
Lenovo Thinkpad Docking Station Dual Monitor Setup
Ever since upgrading to F23, usually only one wakes up. http://forum.thinkpads.com/viewtopic.php?t=114783 kernel-4.3.3-300.fc23 fixed all the display issues for me. Lenovo Ultra Dock Firmware Any idea what my issue may be? Lenovo Docking Station Dual Monitor Problems I don't know if that means getting the 4.3 kernel into F23 or backporting the fix into the 4.2 kernel for F23.
systemctl gdm restart gets the second monitor working again. check over here The external monitor comes back alive when I wake up after the monitors blank. I don't know why these problems have started only recently. Sometimes they both wake up. Thinkpad Pro Dock 40a1
The only way to resume is to do a hard reboot by full powering off then back on. Following my understanding the output of xrandr shouldn't be affected by it, right?At boot I get some errors:➜ ~ dmesg | grep intel [ 0.498465] intel_idle: MWAIT substates: 0x42120 [ 0.498466] After a while of using another day when I docked it, the screens are not recognized at all. his comment is here Comment 63 Karolis Pocius 2015-11-13 04:36:20 EST I've upgraded the day after official release - on November 4th.
Information on the issue: https://support.lenovo.com/us/en/documents/ht081248 Firmware download page: https://support.lenovo.com/us/en/documents/pd014572 Linux support for multiple screens Linux does not yet offer explicit support for the DisplayPort MST hub built into this dock, so Lenovo Thinkpad Docking Station Monitor Not Working I run the system with its Lid closed and with two external monitors (one is horizontal and the other is vertical). Comment 111 Rich R 2016-02-26 08:58:45 EST 4.3.5-300.fc23.x86_64 using newly installed Fedora 23 fully updated.
I end up powering the monitor on and off repeatedly until it resumes functioning as expected.
I didn't see anything strange in dmesg or Xorg.0.log. Ubuntu Ubuntu Insights Planet Ubuntu Activity Page Please read before SSO login Advanced Search Forum The Ubuntu Forum Community Ubuntu Official Flavours Support General Help [ubuntu] Multi screen problem Results 1 I attempted the firmware upgrade running Windows 8 on a flash drive (wondering if that matters at all) and the update seemed to either do nothing or not execute properly. Thinkpad Pro Dock Multiple Monitors This procedure has the advantage that it does not interfere with my desktop-setup, so all applications are still on the desktops and screens I want them to be.
No sequence of commands seems to help, except (like in comment #99) to physically disconnect the cable and reconnect it. except now some people are saying they are just now experiencing problems on F23 and not F22? what I had to do was download the latest optimus driver from Lenovo. weblink Initially, I thought a new kernel fixed this.
External monitor (NEX E231W) DP2-1 DisplayPort->HDMI. Comment 92 Vincent S.