Black Screen (~10sec) on login/logoff on daisy chained monitors

Question

Hey guys
In my setup, I have 2 daisy chained Dell U2414H monitors on the DisplayPort output of my nVidia GTX 760 . They work mostly fine, but I'm getting a roughly 10 seconds delay (black screen) at login and logout. This seems to be an issue with the Intel iGPU, as described on the wiki here. However, the strange thing is, that the black screen only occurs when using both monitors in the daisy chain config (regardless of DP1.2 setting on second monitor). Using one monitor on either HDMI or DisplayPort and even using both, one on HDMI and one on DP, works perfectly fine.
Any ideas? I might just end up buying an HDMI cable and be done with it, but I'd like to have as few cables going to my monitors as possible
Thanks!
This is my /etc/modprobe.d/blacklist.conf
#disable Intel iGPU
install i915 /usr/bin/false
install intel_agp /usr/bin/false
#disable WiFi
install rtl8821ae /usr/bin/false
Some outputs that might be relevant:
# lsmod | grep intel :(
intel_rapl 17356 0
intel_powerclamp 17122 0
crc32c_intel 21809 0
ghash_clmulni_intel 12978 0
aesni_intel 163855 1
aes_x86_64 16719 1 aesni_intel
lrw 12757 1 aesni_intel
glue_helper 12649 1 aesni_intel
ablk_helper 12572 1 aesni_intel
cryptd 18553 3 ghash_clmulni_intel,aesni_intel,ablk_helper
snd_hda_intel 26387 5
snd_hda_controller 26938 1 snd_hda_intel
snd_hda_codec 108536 5 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_intel,snd_hda_controller
snd_pcm 88487 4 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_controller
snd 73436 18 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel
# lsmod | grep i915
no output
# lspci | grep VGA
01:00.0 VGA compatible controller: NVIDIA Corporation GK104 [GeForce GTX 760] (rev a1)

Answer 1

mike_r wrote:
Do you have a nvidia graphics card? My laptop does this whenever I log out of xfce. Haven't found a workaround.
Mike
The computer itself is really old so I have an onboard intel graphics chipset, I also read on the forum about a person who had problems with nvidia but when he installed the nvidia package everything was solved.
I don't think there is something like this for intel?
EDIT: Ow nice! I installed the package: xf86-video-intel    2.10.0-1 for X.org Intel i810/i830/i915/945G/G965+ video drivers and everything works like a charm, so it was a driver problem after all, never expected it.
Last edited by ruurdkrekt (2010-03-15 11:14:00)