Newer Intel drivers have been released and have fixed the issue.  I believe version 31.0.101.2115 and newer work.
I typically use the Intel graphics drivers from downloadcenter.intel.com, since Dell does not typically keep their "customized" version (I have never noticed anything customized) updated.  For the first time, the latest from-Intel version is behaving badly for me.  When I use version 31.0.101.2111, my Inspiron 5501 laptop works great while it is on, but if it goes to sleep or hibernates then the display won't come back on.  If I use version 30.0.101.1994 or earlier, sleep/hibernate works fine.  Version 31.0.101.2111 also works fine on a couple Thinkpad laptops I have that also have 10th gen Intel processors with integrated graphics (one that just has iGFX, one that also pairs iGFX with an nVidia GeForce MX330). Has anyone else experienced this?  Any settings that people have found to work around this?
Inspiron 5501 hangs waking up from sleep with Intel graphics driver 
31.0.101.2111