Am I the only one seeing this issue? Or is it that so few people are still running CentOS 6.x? Quick summary, on a very recent Dell motherboard using the on-board vide and booting the latest CentOS 6 kernel with the “vga=xxx” parameter set to any non-default value results in unusable X11 graphics. Alfred > On Oct 29, 2017, at 15:29, Alfred von Campe <alfred at von-campe.com> wrote: > > The thread "Problems with kernel-3.10.0-693.5.2.el7.x86_64” reminded me that I have a similar problem but on the latest CentOS 6 kernel I’ve been meaning to report. Here is the relevant system information: > > Linux ssg003.bose.com 2.6.32-696.13.2.el6.i686 #1 SMP Thu Oct 5 20:42:25 UTC 2017 i686 i686 i386 GNU/Linux > > 00:02.0 VGA compatible controller: Intel Corporation Device 5912 (rev 04) (prog-if 00 [VGA controller]) > Subsystem: Dell Device 07a2 > Flags: bus master, fast devsel, latency 0, IRQ 11 > Memory at f6000000 (64-bit, non-prefetchable) [size=16M] > Memory at e0000000 (64-bit, prefetchable) [size=256M] > I/O ports at f000 [size=64] > Expansion ROM at <unassigned> [disabled] > Capabilities: [40] Vendor Specific Information: Len=0c <?> > Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00 > Capabilities: [ac] MSI: Enable- Count=1/1 Maskable- 64bit- > Capabilities: [d0] Power Management version 2 > Capabilities: [100] #1b > Capabilities: [200] Address Translation Service (ATS) > Capabilities: [300] #13 > > I have about 100 Dell desktops deployed with CentOS 6 all using the built-in motherboard graphics. But on a Dell Optiplex 5050 with an Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz CPU and the above graphics card, the X11 login screen is all distorted and unusable. There is a simple solution: if I remove the "vga=0x31b” parameter from the kernel boot command it works just fine. However, I would prefer to have a usable alternate console on our 1900x1200 monitors, but any value I tried for the vga parameter results in a distorted login screen. > > Any ideas what may be causing this? This is only an issue on the very latest chipset. On the next most recent Dell desktops we have (Intel(R) Core(TM) i5-4590 CPU @ 3.30GHz) I do not have this issue. Here is the VGA controller info: > > 00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06) (prog-if 00 [VGA controller]) > Subsystem: Dell Device 05a4 > Flags: bus master, fast devsel, latency 0, IRQ 28 > Memory at f7800000 (64-bit, non-prefetchable) [size=4M] > Memory at e0000000 (64-bit, prefetchable) [size=256M] > I/O ports at f000 [size=64] > Expansion ROM at <unassigned> [disabled] > Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit- > Capabilities: [d0] Power Management version 2 > Capabilities: [a4] PCI Advanced Features > Kernel driver in use: i915 > Kernel modules: i915 > > Does anyone else have a similar issue and found a better solution? > > Alfred