Distorted Display - mini display port to Dell ST2420L dvi connection

I am having problem with connecting my new Macbook Air to external display.
I have tried restarting both the Macbook and Dell monitors and installing latest Lion OS updates.
The connection is from mini display to dvi adapter from Apple and a dvi to dvi cable connecting to the rear of the monitor
The monitor works fine with both VGA and HDMI inputs and DVI input from PC
Here is a picture of the distorted display http://t.co/yVdmCfl
Please help
Thanks
Aditya

Hi, Matt, and welcome to Apple Discussions.
The Matrox Support only told me that the new MacBook Pro with Mini Display Port is not supported, but as it's working for 2x1680x1050 with the Dual-Link DVI adapter, I was wondering if the Mini Display Port to Dual-Link DVI Adapter could be the problem.
I suspect that what Matrox Support meant when they said "not supported" was, in fact, "not supported": i.e., they've tried it and it doesn't work satisfactorily. You've tried it too, and found that to be true. Now you just need to come to terms with the fact. Matrox is quite open about it; it's not a secret. See the 9400M/9600MGT MacBook Pro entry in this compatibility table from Matrox's web site:
http://www.matrox.com/graphics/en/support/compatibility/gxm/resolutions/

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Hi all, I don't know if any one of you experience this issue and can help me.
I am using an unibody macbook pro (late2008 model) to connect to a 30'' cinema display via the famous $100 mini diaplay port to dual link DVI adapter. I have connected the usb cable from the ACD to the adapter and the usb cable of the adapter to my macbook pro. This setting works fine under OSX 10.5.7.
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Dell XPS 15 l502x mini-Display Port stopped working after update.

After the updates on the 11-10-2014 my mini-display port (which worked great previously and is part of the Intel Graphics) stopped working.
Am running Arch 64bit with Slim + E19
The symptoms are:
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3. The monitor no longer recognizes that there is a laptop plugged in and just stays off...
kernel.log
Oct 13 10:10:19 localhost kernel: [drm:cpt_set_fifo_underrun_reporting] *ERROR* uncleared pch fifo underrun on pch transcoder B
Oct 13 10:10:19 localhost kernel: [drm:cpt_serr_int_handler] *ERROR* PCH transcoder B FIFO underrun
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Oct 13 14:09:35 localhost kernel: [drm] This can cause pipe underruns and display issues.
Oct 13 14:09:35 localhost kernel: [drm] Please upgrade your BIOS to fix this. (Will look for an update...)
lspci | grep Intel | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
Here are the packages that I think I may have to swap around...
[2014-10-11 19:16] [PACMAN] removed ati-dri (10.2.8-1)
[2014-10-11 19:16] [PACMAN] removed intel-dri (10.2.8-1)
[2014-10-11 19:16] [PACMAN] removed nouveau-dri (10.2.8-1)
[2014-10-11 19:16] [PACMAN] removed svga-dri (10.2.8-1)
[2014-10-11 19:16] [PACMAN] removed lib32-intel-dri (10.2.8-1)
[2014-10-11 19:16] [PACMAN] removed lib32-nouveau-dri (10.2.8-1)
[2014-10-11 19:16] [PACMAN] upgraded apache-ant (1.9.4-2 -> 1.9.4-3)
[2014-10-11 19:16] [PACMAN] upgraded libdrm (2.4.56-1 -> 2.4.58-1)
[2014-10-11 19:16] [PACMAN] installed mesa-dri (10.3.0-3)
[2014-10-11 19:16] [PACMAN] upgraded wayland (1.5.0-1 -> 1.6.0-1)
[2014-10-11 19:16] [PACMAN] upgraded mesa (10.2.8-1 -> 10.3.0-3)
[2014-10-11 19:16] [PACMAN] upgraded mesa-libgl (10.2.8-1 -> 10.3.0-3)
[2014-10-11 19:16] [PACMAN] upgraded libva (1.3.1-2 -> 1.4.0-1)
[2014-10-11 19:20] [PACMAN] upgraded linux-lts (3.14.19-1 -> 3.14.20-1)
[2014-10-11 19:27] [PACMAN] upgraded xf86-video-ati (1:7.4.0-3 -> 1:7.5.0-1)
[2014-10-11 19:27] [PACMAN] upgraded xf86-video-intel (2.99.916-2 -> 2.99.916-3)
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I suspect this is some type of driver regression (kernel/mesa/xorg) but am not sure as I have not seen much information about this issue online.
Unless someone has a better idea... when I get time to try to resolve the issue I will update this post.
Ok I missed this from dmesg:
[11671.333426] WARNING: CPU: 0 PID: 486 at drivers/gpu/drm/i915/intel_dp.c:137 intel_dp_max_link_bw.isra.9+0x3e/0xa0 [i915]()
[11671.333428] invalid max DP link bw val 0, using 1.62Gbps
[11671.333430] Modules linked in: ctr ccm bnep ipt_REJECT xt_conntrack iptable_filter xt_CHECKSUM xt_tcpudp iptable_mangle ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack ip_tables x_tables uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core fuse v4l2_common ecb videodev media btusb bluetooth 6lowpan_iphc coretemp hwmon intel_rapl x86_pkg_temp_thermal intel_powerclamp joydev mousedev snd_hda_codec_hdmi kvm_intel arc4 snd_hda_codec_realtek snd_hda_codec_generic kvm iwldvm snd_hda_intel snd_hda_controller crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel cryptd snd_hda_codec r8169 iwlwifi snd_hwdep dell_wmi snd_pcm sparse_keymap iTCO_wdt snd_timer snd mii iTCO_vendor_support dell_laptop microcode pcspkr dcdbas dell_smo8800 psmouse serio_raw
[11671.333467] thermal soundcore i2c_i801 shpchp evdev mac_hid mei_me mei lpc_ich wmi processor ac battery pci_stub vboxpci(O) vboxnetflt(O) vboxnetadp(O) vboxdrv(O) udlfb syscopyarea sysfillrect sysimgblt fb_sys_fops tun nfs lockd sunrpc fscache vhba(O) bridge stp llc brcmsmac cordic brcmutil led_class bcma mac80211 cfg80211 rfkill bbswitch(O) ext4 crc16 mbcache jbd2 sd_mod sr_mod crc_t10dif cdrom crct10dif_common atkbd libps2 ahci libahci ehci_pci libata xhci_hcd ehci_hcd scsi_mod usbcore usb_common i8042 serio i915 button intel_gtt i2c_algo_bit video drm_kms_helper drm i2c_core
[11671.333506] CPU: 0 PID: 486 Comm: Xorg.bin Tainted: G W O 3.16.4-1-ARCH #1
[11671.333509] Hardware name: Dell Inc. Dell System XPS L502X/0YR8NN, BIOS A04 03/25/2011
[11671.333511] 0000000000000000 00000000c0982604 ffff8800b2b4fa80 ffffffff8152ba1c
[11671.333515] ffff8800b2b4fac8 ffff8800b2b4fab8 ffffffff8106e45d ffff880037c92000
[11671.333518] 0000000000000000 0000000000000004 ffff88014e2d8c00 ffff8801b5a2f800
[11671.333521] Call Trace:
[11671.333528] [<ffffffff8152ba1c>] dump_stack+0x4d/0x6f
[11671.333534] [<ffffffff8106e45d>] warn_slowpath_common+0x7d/0xa0
[11671.333537] [<ffffffff8106e4dc>] warn_slowpath_fmt+0x5c/0x80
[11671.333553] [<ffffffffa00f543e>] intel_dp_max_link_bw.isra.9+0x3e/0xa0 [i915]
[11671.333566] [<ffffffffa00f5539>] intel_dp_compute_config+0x99/0x660 [i915]
[11671.333579] [<ffffffffa00da214>] __intel_set_mode+0xb14/0x1670 [i915]
[11671.333608] [<ffffffffa00dd4e6>] intel_set_mode+0x16/0x30 [i915]
[11671.333638] [<ffffffffa00de623>] intel_crtc_set_config+0xa83/0xdd0 [i915]
[11671.333666] [<ffffffffa0025fa1>] drm_mode_set_config_internal+0x61/0xe0 [drm]
[11671.333690] [<ffffffffa002984b>] drm_mode_setcrtc+0x2ab/0x5b0 [drm]
[11671.333712] [<ffffffffa0019b9f>] drm_ioctl+0x1df/0x680 [drm]
[11671.333728] [<ffffffff811d4db0>] do_vfs_ioctl+0x2d0/0x4b0
[11671.333737] [<ffffffff811df4ee>] ? __fget+0x6e/0xb0
[11671.333745] [<ffffffff811d5011>] SyS_ioctl+0x81/0xa0
[11671.333753] [<ffffffff815317a9>] system_call_fastpath+0x16/0x1b
[11671.333758] ---[ end trace 64be8044e26ca3c5 ]---
Last edited by scmurcott (2014-10-13 19:12:07)

So I downgraded those packages and the kernel with no luck.
I tried to get the HDMI working via Synergy... and failed
I then tested the Display Port on Windows and it did not work there either - exhibiting the same symptoms as Linux - the OS sees the monitor but no data was transferred.
So I ended up using one of my Display Link monitors at work... the USB monitors were ok, just an irritation with a flickering mouse.
I hope it is the miniDP>HDMI adapter and not the port... very frustrated by this problem.
I hope to test another adapter soon.
I think as nobody else is experiencing this issue that it may well be hardware/firmware related.
Hope there is a happy end to this post but not feeling so positive right now.

Will my Airbook (11" late 2010) w/ NVIDIA GeFORCE 320M 256MB using the Mini Display Port to Dual-Link DVI Adapter support the Dell 3007WFHC (30") monitor at full resolution (2560X1600)

Will my Airbook (11" late 2010) w/ NVIDIA GeFORCE 320M 256MB using the Mini Display Port to Dual-Link DVI Adapter support the Dell 3007WFHC (30") monitor at full resolution (2560X1600).
Works fine at 1280X800 (with out without MDP DL DVI Adapter) - cannot get any higher resolution

Hi ddickson01,
The MacBook Air 11 inch late-2010 model does support 2560 x 1600 resolution on an external display. See this specifications article for reference -
MacBook Air (11-inch, Late 2010) - Technical Specifications
Thanks for using Apple Support Communities.
Sincerely,
Brett L

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Looking for advice on:
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2) How to take advantage of the full resolution through HDMI port?
Any help would be greatly appreciated.
Thanks!

So re-reading this thread, I now realize you did exactly what I wanted to do but your issue was having a cloned vs. extended desktop. Oops!
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Can you access the same menu in your OSD and report back what your DP compatability is?
Thanks!
mgb

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Sorry I did not make that clear. Instead of the Thunderbolt/Mini-DisplayPort to Displayport. which is the connection I am trying now with the results described...basically nothing. Monitor knows there is a connection it just says no signal from computer. MPB does not even show the monitor in display prefences. I tried holding option and pressing "Detect Displays" and nothing shows up.

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nice, it's always the ones that fail to do a basic search that are the most hostile. i'm sorry you thought my asking you what monitor was 'drilling' my crystal ball was broken at the time.
there are TONS of posts and articles out there with your answer, but since that may be too hard for you, i've provided some here.
http://forums.macrumors.com/showthread.php?t=1597826
http://forums.macrumors.com/showthread.php?t=1714714

Mini Display Port to Dual Link DVI Does Not Work Right

Somebody said here that this was an isolated problem. Well, I just got my new MacBook Pro 15", used the adapter to hook to the 30" Dell monitor, and it works a few minutes, then the screen distorts.
Count me among the isolated problems- it is beginning not to look isolated.
Now, do I wait on Apple to fix the problem, or do I return the MacBook Pro while still in the return period?

Hi, Matt, and welcome to Apple Discussions.
The Matrox Support only told me that the new MacBook Pro with Mini Display Port is not supported, but as it's working for 2x1680x1050 with the Dual-Link DVI adapter, I was wondering if the Mini Display Port to Dual-Link DVI Adapter could be the problem.
I suspect that what Matrox Support meant when they said "not supported" was, in fact, "not supported": i.e., they've tried it and it doesn't work satisfactorily. You've tried it too, and found that to be true. Now you just need to come to terms with the fact. Matrox is quite open about it; it's not a secret. See the 9400M/9600MGT MacBook Pro entry in this compatibility table from Matrox's web site:
http://www.matrox.com/graphics/en/support/compatibility/gxm/resolutions/

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I have a new 2012 (June) MacBookPro running 10.7.4 with a 2.5 GHz Intel i5 processor. Graphics Intel HD Graphics 4000 512 MB.
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All software is up to date.
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Called Apple Support and they solved my issue.
1) Restart the computer in Safe Mode with display attached (shut down and restart while holding down shift key).
The display showed up without distortion.
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Vioala!

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Chances are excellent that if your receiver is less than 20 years old it has an optical input, this is a digital signal which will sound MUCH MUCH better than using an analog 3.5MM to 3.5MM connection. I recommend using the cable suggested or one with the same connections but of a different length if your needs warrant it.

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Hello There
Can any of you advise on the below? Tried to connect Mac mini with a 30" display through a DVI dual link mini display port adapter. For the first try Mac mini go connected to the display, then i've chosen the highest resolution (2560x1600, native) and right at that moment they got disconected. Since then the display stays black. What can be the issue, is it possible DVI dual link mini display port adapter is not compatible with 30"display (LG W3000H)? It works with DVI male-male cable plus DVI HDMI adapter as long as the resolution stays under 1280x800. Any idea is much appreciated.
Thank you, Vera

Hi,
I can report that my Mac Mini Intel Duo connected instantly and without even having to set it up (on the first try) with my 1366x768 native resolution DELL 50" Plasma Display. It's so beautiful that I just want to stand there and fondle my HDTV as I drool haplessly like Homer Simpson with a doughnut in his mouth. Seriously, no problems.... guess I bought the right cable (ebay).
Before you buy a Duo, make sure you're aware of the airport and bluetooth issues that so many (maybe everyone who tries to use them together) are having. It seems that bluetooth interferes with airport, or maybe the other way around. Anyway, it's messed up. Also, Airport reception is generally VERY poor with the new Intel Mac Mini.
Despite these things, I still love mine (I now have 2 base stations and an airport express for my powerhouse wireless needs, and an external DLink bluetooth-2-USB dongle solved the bluetooth/airport issues... in my case).
FWIW,
awk
667-MHz Ti PowerBook G4. Mac OS X (10.3.9)

Mini display port to vga not detected

Hi,
Can't put the mini displayport to VGA adapter working in my macbook pro 13" running snow leopard.
To debug I try a mini displayport to DVI and it works fine, so I think that it is not an hardware problem, unless VGA adapter uses extra pins from the mini display port. I think that VGA is active and DVI is a passive adapter.
When I connect the VGA adapter to the mac without the monitor the mac LCD flashes blue one time. If I connect the monitor cable it flashes blue 3 or 4 times.
The external monitor always says no signal.
The mac does not seems to detect the adapter, even running the firmware update it can not find the adapter. I try it with and without charger pluged.
The adapter is original from apple and works in other computer.
Can anyone give some help here?
Thanks.

Called Apple Support and they solved my issue.
1) Restart the computer in Safe Mode with display attached (shut down and restart while holding down shift key).
The display showed up without distortion.
2) Change the display to my desired preferences (dimensions and refresh rate).
3) Restart computer. ...and it works like a charm.
Vioala!

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Hello all,
I have recently bought a Dell U2711 to use the 2560x1440 maximum resolution with my Mac Book Pro 17", purchased in July 2009. I was wondering if I should buy a mini DisplayPort to Display Port adaptor, or a mini Display Port to HDMI adaptor to achieve the maximum resolution... Any suggestions...? Any cheap adaptors and / or cables in London?
Many thanks!

This would be a good solution for you <http://estore.circuitassembly.com/products/Mini-Displayport-to-Displayport-Ada pter-Cable.html> and they only charge 14 USD for shipping to the UK. It says their shipping only takes 2-3 days as well.
It's best to keep your signal in the displayport form, if you convert to HDMI you will lose maximum resolution.

Any Mini Display Port to Display Port cable?

I am going to buy a new 30" DELL monitor which equipped with Display Port, but I cannot find any Mini Display Port to Display Port cable, so what can I do?
Don't tell me to buy a Mini Display Port to Dual Link DVI cable, it is nonsense to change the type of connector and buy that expensive cable.

There is at least one that I know of.
http://estore.circuitassembly.com/products/Mini-Displayport-to-Displayport-Adapt er-Cable.html
I have it and am doing with it exactly what you want to do and it's working great.

Distorted Display - mini display port to Dell ST2420L dvi connection

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