CoM – Il Blog di Carlo Becchi Compreresti un Raggio della Morte usato, da quest'uomo?


Alla ricerca di un Linux-PC? Attenzione all’intel GMA X4500!

So bene quanto è difficile, ma nel contempo esaltante, la ricerca di un PC ideale per l'amato pinguino.

Da queste parti si è sempre parlato di Intel levandosi il cappello, soprattutto per quanto riguarda le schede video integrate, ma in generale per il suo coinvolgimento attivo nel mondo dell'open source, come ben sa chi ascolta gli interventi registrati ad Ubuntu Live, su IT Conversations.

Proprio in questi giorni mi è arrivato un volantino in cassetta con le offerte di una catena della grande distribuzione e ho notato che, principalmente sui computer portatili, cominciano ad essere presenti esemplari dotati di acceleratore video Intel Graphics Media Accelerator X4500, destinato in futuro a soppiantare il collaudato X3100.

Proprio lo stesso giorno avevo letto su Phoronix, sito di riferimento per l'hardware su Linux, la recensione di una motherboard basata su chipset Intel G43, che integra questo acceleratore.

L'articolo più che una recensione, sembra un bollettino di guerra:


The motherboard exhibited no compatibility problems with Ubuntu 8.10 and the Linux 2.6.27 kernel. With using the LM_Sensors w83627dhg-isa-0290 we also had reliable readouts on the CPU voltage, +3.33V, +12.00V, case fans, system temperature, and CPU temperatures. When it came time to test the G43 X4500 graphics though, it wasn't exactly pleasurable. We had tested out the Intel GMA X4500HD back in July with the Super Micro C2SEA and it had worked out quite well. However, the open-source Intel graphics driver is currently going through some major renovations.

For months now they have been working on the Graphics Execution Manager for their memory management needs along with kernel mode-setting and other major components. This invasive work has caused a few regressions and other issues. With Ubuntu 8.10 and the Intel GMA X4500 found on the ASRock motherboard, the performance was terrible and the system would lock-up in games like Nexuiz. After these problems using the Intel 2.4 driver, we decided to try Fedora 10 Snapshot 3 since it ships with the newest Intel 2.5 driver and has integrated the latest GEM bits and other X.Org changes. When it came time to starting the X Server on this motherboard with the Intel X4500 graphics, we would experience a segmentation fault due to memory issues. The GMA X4500HD though hadn't generated a segmentation fault when using the same configuration.

Reverting back to Ubuntu, we then built the xf86-video-intel, Mesa, and DRM from git source, but still there were serious performance issues. The ASRock G43Twins-FullHD isn't to be blamed but it's squarely Intel with the major changes they have going on right now within their Linux driver.


Proprio in virtù delle parole spese in passato su Intel GMA, ho ritenuto doveroso segnalare l'attuale situazione.

I driver per questi chip grafici sono in una fase di profondo mutamento, dalla quale arriveranno grandi benefici, ma al momento é consigliabile evitarli, almeno se si desidera essere immediatamente produttivi.

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