Couldn't find PLL settings for mode! podczas instalacji na laptopie.

[Fieras]

Witam!
Podczas startu instalacji owego na laptopie Acer Aspire 5810T Ubuntu napotykam się z następującymi komunikatami:

[ 14.856769] [drm:i9xx_crtc_mode_set] *ERROR* Couldn't find PLL settings for mode!
[ 14.856776] [drm:i9xx_crtc_helper_set_config] *ERROR* falied to set mode on [CRTC:4]
[ 14.866589] Btrfs : loaded
[ 14.874825] xor : automatically using best checksumming function: generic_sse
[ 14.892011] generic_sse : 5325.000 MB/sec
[ 14.892042] xor: using function : generic_sse(5325.000 MB/sec)
plymouthd: ./ply-renderer-i915-driver.c:328: begin_flush: Assertion buffer != ((void )0)* failed.
plymouthd: ./ply-renderer-i915-driver.c:328: begin_flush: Assertion buffer != ((void )0)*failed.
*Checking battery state...
[48.404114] [drm:i9xx_crtc_mode_set] *ERROR* Couldn't find PLL settings for mode!
[48.404119] [drm:i9xx_crtc_helper_set_config] *ERROR* falied to set mode on [CRTC:4]
[48.404203] [drm:i9xx_crtc_mode_set] *ERROR* Couldn't find PLL settings for mode!
[48.404207] [drm:i9xx_crtc_helper_set_config] *ERROR* falied to set mode on [CRTC:4]
[48.432927] [drm:i9xx_crtc_mode_set] *ERROR* Couldn't find PLL settings for mode!
[48.432985] [drm:i9xx_crtc_helper_set_config] *ERROR* falied to set mode on [CRTC:4]
[48.563299] [drm:i9xx_crtc_mode_set] *ERROR* Couldn't find PLL settings for mode!
[48.563305] [drm:i9xx_crtc_helper_set_config] *ERROR* falied to set mode on [CRTC:4]

Po wyświetleniu powyższych komunikatów instalator zatrzymuje się i nic się nie dzieje.

[luk1don]

Masz podłączony zewnętrzny monitor?

[Fieras]

Mam,gdyż nie mam matrycy. Istnieje możliwość zainstalowania Ubuntu bez niej??