I have a Latitude E7470 for work and when I first started using it with my docking station to external monitors, I was noticing a similar issue as was brought up in the thread linked below. One of my two external monitors (seemingly randomly) would flicker once, or periodically to a point where it was distracting. Additionally, I have seen the graphics card crash a few times after such problems appeared.
I implemented the "fix" that was linked (and marked as the answer to the thread) over lunch about a week ago, and more things went haywire from there. Basically, at this point I am unable to connect to any external monitors through the docking station. I have resorted to having a single monitor connected via HDMI, but it is hardly conducive to working and I would really like to have my multiple monitor setup back (even with the flashing problem, at the least).
Is there any way to undo the actions I have run, or is there a more up to date fix for this issue?
Any response and guidance would be greatly appreciated. I'd really like to not have to resort to getting a different style (USB 3.0) docking station if I can prevent it.
Thanks for posting.
Apologies that your computer and monitor are not working the way you want them to.
Have you seen this?
<ADMIN NOTE: Broken link has been removed from this post by Dell>
Thanks for your response.
I have not seen that specific page, however, it looks to me like #3 was the "fix" that I implemented that caused problems.
What I'm really curious about is if there is anyway to undo that action since it seemed to cause more problems than not.
I'd also like to refrain from updating BIOS, etc. until I know that the problem doesn't lie in the Synaptics driver side of things. Also, when I align the search to my actual product (Latitude E7470), I do not see the Synaptics driver anywhere within the driver updates. Is it possible that this update wasn't intended for my machine?
Thanks for the follow up. I'll see if another resolution is available. Just in case, have you made a backup OS disk? You might have to reinstall the OS.
Thanks for looking into this for me.
I haven't currently made a backup OS disk, but I'll talk to the IT folks and update them if that step is necessary and coordinate with them to create said disk.
One workaround we've been mulling around is to use a USB 3.0 docking station. Do you think this would be a viable backup plan should the problem continue?
That link is for the 7240/7440. He has the 7470.
The 7470 may have the same hardware as the 7450, which has a diffent model of the Synaptics hub...but I haven't verified, and as of yet, I've been unable to find a fix for the 7470.
And the OS does not need to be reinstalled. It's not a driver issue. It's a Dell docking station/motherboard issue.
Browse the web a bit, and you'll see this problem is rampant.
Edit: Just found new BIOS released on Dell website 3/18/16...might give that a shot.
I'm having a very similar issue with my E7470. If I connect (through DP or DVI/HDMI) a 4k monitor to the E-port docking station, the screen constantly blinks on and off. I also tried running Ubuntu on the E7470, which shows a very amusing version of the problem: the 4k monitor is on until I move the mouse cursor over to it, at which point it turns off. Taking the cursor off the screen makes the monitor turn back on.
I've also tried setting the monitor to DP1.1, but with that setting the E7470 didn't even detect the monitor (the other laptops worked fine both with 1.1 and 1.2).
I tried various different versions of the docking station (we run hundreds of Dell laptops, so I could borrow all sorts of historical artifacts), and also different brands of 4k monitors, without any change. FHD monitors on the other hand seem to work, at least for the few minutes I've tried (I didn't have more time for testing).
The docking stations and monitors work fine with all generations of E64xx laptops that I've tried, so the fault is definitely with the E7470.
I've tried Windows 10 and Ubuntu on the laptop, updated the BIOS to 1.4.2. (March 15, 2016) and the Intel GPU driver to 126.96.36.19990 ,A01 (March 17, 2016). I tried to update the VMM HUB, but the installer wouldn't run - it complained that my system was incompatible with the driver.
The E7470 would be the perfect business laptop - it is reasonably light and compact, has a great screen, powerful enough for most purposes and it's equipped with full docking port. I would be really disappointed if we had to look for another solution/vendor.
Have you been able to track down another solution for this? Or some way to revert the firmware I may have overwritten?
If not, should I move forward with the USB3.0 docking station, and do you think this would be a plausible solution?
I am having the exact same problem with my Dell Latitude E7470. In fact all three that i bought are displaying the same flashing monitor issues. I installed the Synaptic Firmware at the urging of a Dell representative and my external monitors quit working entirely. They were kind enough to send me a replacement laptop. Since then the problem continues, I have updated to the latest Bios 1.4, and installed the updated display drivers. Both updates release in March 2016. I refuse to update the Synaptic firmware again.
As I am typing this, my screens just went black. UGG. I have had dell open an escalated ticket. Hoping to hear back from them on Monday or Tuesday. This is a rampant issue that needs to be addressed. If it's not resolved for us soon, I'll b requesting a refund and buying from another vendor.
My laptop has the Intel Core i7 processor. My docking station is a Dell Eport PR03X. I am using one VGA and one DVI for external monitors. (Flashed again!)
jfrink, and anyone else reading this thread,
It seems like this is an obvious problem that is extraordinarily poorly supported by Dell, and will apparently continue to be so since no response has been made to this thread in well over a week by any Dell employee.
That being said, you may as well just take the option that I went ahead with -- switch over to a USB 3.0 docking station. It uses an entirely different display driver and I'm able to be up and running with 3 monitors (2 external and 1 from the laptop) with no blinking, flashing bulls**t to worry about.
I went with this linked docking station, but there are a ton of others for similar price that do the same thing. At the end of the day, a result is a result, and I was sick of waiting to get an answer on this issue.