On Mon, October 30, 2017 2:38 pm, Alfred von Campe wrote:
> Am I the only one seeing this issue? Or is it that so few people are
> still running CentOS 6.x?
About 2/3 of workstations in our Department are CentS 6 (latest). Neither
of them has any video problems. All of them have decent video cards,
neither of them uses on system board (aka "motherboard") of on CPU die
video.
I know this will not help to solve your trouble...
Valeri
> Quick summary, on a very recent Dell
> motherboard using the on-board vide and booting the latest CentOS 6 kernel
> with the â??vga=xxxâ?? parameter set to any non-default value results in
> unusable X11 graphics.
>
> Alfred
>
>> On Oct 29, 2017, at 15:29, Alfred von Campe <alfred@xxxxxxxxxxxxx>
>> wrote:
>>
>> The thread "Problems with kernel-3.10.0-693.5.2.el7.x86_64â?? reminded
>> me that I have a similar problem but on the latest CentOS 6 kernel
>> Iâ??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=0x31bâ?? 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
>
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++++++++++++++++++++++++++++++++++++++++
Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247
++++++++++++++++++++++++++++++++++++++++
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