Screen flicker after upgrade to kernel 4.0.0-040000-generic #201504121935 SMP Sun Apr 12 23:58:08 UTC 2015 i686 i686 i686 GNU/Linux

After upgrading Lubuntu 14.04.2 LTS's kernel to 4.0 there is screen flicker depending on where the mouse is placed on the screen. I am using an Dell Vostro 1015 with -PCI Devices-
Host bridge : Intel Corporation Mobile 4 Series Chipset Memory Controller Hub (rev 07)
VGA compatible controller : Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07) (prog-if 00 [VGA controller])
Display controller : Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
USB controller : Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 03) (prog-if 00 [UHCI])
USB controller : Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 03) (prog-if 00 [UHCI])
USB controller : Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 03) (prog-if 00 [UHCI])
USB controller : Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 03) (prog-if 20 [EHCI])
Audio device : Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)
PCI bridge : Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 03) (prog-if 00 [Normal decode])
PCI bridge : Intel Corporation 82801I (ICH9 Family) PCI Express Port 2 (rev 03) (prog-if 00 [Normal decode])
PCI bridge : Intel Corporation 82801I (ICH9 Family) PCI Express Port 6 (rev 03) (prog-if 00 [Normal decode])
USB controller : Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 03) (prog-if 00 [UHCI])
USB controller : Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 03) (prog-if 00 [UHCI])
USB controller : Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 03) (prog-if 00 [UHCI])
USB controller : Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 03) (prog-if 20 [EHCI])
PCI bridge : Intel Corporation 82801 Mobile PCI Bridge (rev 93) (prog-if 01 [Subtractive decode])
ISA bridge : Intel Corporation ICH9M LPC Interface Controller (rev 03)
SATA controller : Intel Corporation 82801IBM/IEM (ICH9M/ICH9M-E) 4 port SATA Controller [AHCI mode] (rev 03) (prog-if 01 [AHCI 1.0])
SMBus : Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 03)
Ethernet controller : Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 03)
Network controller : Broadcom Corporation BCM4312 802.11b/g LP-PHY (rev 01)