I saw something interesting in logcat.log:
11-27 17:02:51.363 469 480 I ActivityManager: Killing 1281:android.process.media/u0a7 (adj 902): empty #2
11-27 17:02:51.403 469 607 D ActivityManager: cleanUpApplicationRecord -- 1281
11-27 17:03:00.062 160 160 E GRALLOC-KMS: failed to set crtc (Invalid argument) (crtc_id 25, fb_id 31, conn 27, mode 800x480)
11-27 17:03:00.062 160 160 E FramebufferSurface: error posting framebuffer: -22
11-27 17:03:33.862 469 469 I ActivityManager: Killing 1465:com.android.email/u0a33 (adj 902): empty #2
11-27 17:03:33.925 469 480 D ActivityManager: cleanUpApplicationRecord -- 1465
11-27 17:04:00.061 160 160 E GRALLOC-KMS: failed to set crtc (Invalid argument) (crtc_id 25, fb_id 33, conn 27, mode 800x480)
11-27 17:04:00.061 160 160 E FramebufferSurface: error posting framebuffer: -22
11-27 17:05:00.061 160 160 E GRALLOC-KMS: failed to set crtc (Invalid argument) (crtc_id 25, fb_id 31, conn 27, mode 800x480)
11-27 17:05:00.061 160 160 E FramebufferSurface: error posting framebuffer: -22
11-27 17:06:00.061 160 160 E GRALLOC-KMS: failed to set crtc (Invalid argument) (crtc_id 25, fb_id 33, conn 27, mode 800x480)
11-27 17:06:00.061 160 160 E FramebufferSurface: error posting framebuffer: -22
.....
11-27 17:11:00.112 160 160 E GRALLOC-KMS: failed to set crtc (Invalid argument) (crtc_id 25, fb_id 31, conn 27, mode 800x480)
11-27 17:11:00.112 160 160 E FramebufferSurface: error posting framebuffer: -22
11-27 17:11:59.134 208 208 W perfprofd: unable to open config directory /data/data/com.google.android.gms/files: (No such file or directory)
11-27 17:11:59.134 208 208 I perfprofd: profile collection skipped (missing config directory)
11-27 17:12:00.112 160 160 E GRALLOC-KMS: failed to set crtc (Invalid argument) (crtc_id 25, fb_id 33, conn 27, mode 800x480)
11-27 17:12:00.112 160 160 E FramebufferSurface: error posting framebuffer: -22