Hi all, When I install Hardy desktop edtion (8.04 beta1), I failed and entered the busybox interface instead of the graphic user guide. I check the log file and it said (EE) Screen(s) found, but none have a usable configuration. Fatal server error: no screens found
The root cause I think is same as https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-vesa/+bug/1 74434/ I think it's a common issue. This bug frustrate user to install Ubuntu. Now I can only install Ubuntu via alternate CD and update the driver by myself. Then I can enter X. The bug can be duplicated when the graphic card is only supported by VESA driver and the monitor's hsync and vrefresh rate is just a value that probed by X's auto configuration. And the here is a patch from FC9 can fix the issue, can anybody help to test it and add it to the current distribution before RC? Thanks Patch contents: --- xf86-video-vesa-1.3.0/src/vesa.c.jx 2007-01-30 10:31:32.000000000 -0500 +++ xf86-video-vesa-1.3.0/src/vesa.c 2007-01-30 10:56:15.000000000 -0500 @@ -638,8 +638,40 @@ xf86UnloadSubModule(pDDCModule); } - if ((pScrn->monitor->DDC = pVesa->monitor) != NULL) - xf86SetDDCproperties(pScrn, pVesa->monitor); + /* UNCLEAN */ + do { + Bool had_cfg_ranges, have_ddc_ranges; + + had_cfg_ranges = (pScrn->monitor->nHsync || pScrn->monitor->nVrefresh); + if ((pScrn->monitor->DDC = pVesa->monitor) != NULL) + xf86SetDDCproperties(pScrn, pVesa->monitor); + have_ddc_ranges = (pScrn->monitor->nHsync || pScrn->monitor->nVrefresh); + + if (have_ddc_ranges && !had_cfg_ranges) { + int i; + for (i = 0; i < DET_TIMINGS; i++) { + if (pVesa->monitor->det_mon[i].type == DS_RANGES) + break; + } + if (i < DET_TIMINGS) + break; + + /* + * DDC added ranges, but they're inferred from the modes, not + * copied from a range section. So in the worst case, where it's + * not a range but a single frequency, stretch things out to be + * a range. Panels with only one mode listed in DDC will + * otherwise probably not match any VESA modes. Hooray for + * conformance. + */ + if (pScrn->monitor->hsync[0].lo == pScrn->monitor->hsync[0].hi + && pScrn->monitor->hsync[0].lo > 31.5) + pScrn->monitor->hsync[0].lo = 31.5; + if (pScrn->monitor->vrefresh[0].lo == pScrn->monitor->vrefresh[0].hi + && pScrn->monitor->vrefresh[0].lo > 50.0) + pScrn->monitor->vrefresh[0].lo = 50; + } + } while (0); xf86DrvMsgVerb(pScrn->scrnIndex, X_INFO, DEBUG_VERB, "Searching for matching VESA mode(s):\n"); Regards, Wolke -- Ubuntu-devel-discuss mailing list Ubuntu-devel-discuss@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-devel-discuss
